Setting EC Levels Using the Teros 12 Sensor and AROYA SOLUS APP

Maintaining healthy plants can be a guessing game that can result in lower quality crops. Its difficult to know the best time to water and feed plants. This is where SOLUS comes in. Avoid crop loss, maximize plant growth success. 

Setting EC Levels Using the Teros 12 Sensor and AROYA SOLUS APP

The Teros 12 Sensor, SOLUS Spot Meter App and EC Learning about EC

Electrical conductivity is a measurement of salt levels in plant growing mediums like soil, coco coir or rockwool. Adding nutrients to your soil increases electrical activity. Adding water washes out the salts. EC is one of three measurements the SOLUS displays.

Teros 12 Sensor Measurements

  • water content: %
  • temperature: F
  • electrical conductivity: ds/m

For predictable high yielding results these variables must be managed carefully.

View Product

Why EC Matters

EC tracks nutrients from fertilizer. High nutrient levels will block the plants ability to absorb water.

Low nutrient levels allows the plant to absorb water without providing nutrition to maximize growth rates.

Avoiding the Guess Game

  • Maintaining healthy plants can be a guessing game that can result in lower quality crops.
  • Its difficult to know the best time to water and feed plants.
  • It can take years of experience with one crop to know by looking at a plant whether or not it is healthy.

EC and Water Content Sensors

The Teros 12 EC ds/m Sensor.

SOLUS App displays EC which it reads from the Teros 12 sensor placed in your grow medium.

The Teros sensor passes electrical current between the two outer prongs. The rate of transmission displays in ds/m. Higher salt levels increase ds/m readings.
This is how the SOLUS helps to gain an understanding of nutrient levels in soil.

Teros 12 WC Sensor

The Teros 12 sensor measures water content too.The sensor creates an electromagnetic field and measures it with a high degree of sensitivity in the surrounding growing medium. The value is converted to Volumetric Water Content (VWC) and shows on the SOLUS App as a %.

Understanding volumetric water content levels helps to set watering schedules as the growing medium becomes saturated with water then dries out.

View Product

SOLUS App Download links (phone only)

Apple

Google

A Deeper Dive

Growing mediums and the Teros 12

Choosing a grow medium depends on the grow space set up for irrigation and drainage as well as the personal preference of the gardener and the desired plant size and shape.

Natural soils, coco coir, and rockwool are several popular choices. Each one has a different rate of drying after watering and each medium has different size options that a gardener chooses from.

Pots and Containers

Plastic or other hard containers like raised beds are popular because they dry slower and contain the roots entirely. The Teros 12 can be used in hard containers by cutting a void in the side.

The SOLUS includes a template for where the sensor should be placed. We use a hole saw to cut an entry into the pot for the sensor. The sensor is then left in this pot for the entire cycle. The Teros 12 is desiged to be permanatly buried in fields and orchards. Leaving it in a single location for a crop cycle works fine.

Cloth Grow Bags

The Teros 12 sensor can measure any combination of grow mediums and containers.

Cloth bags with coco or soil are popular and easy to work with.

We've settled on 3lb fabric bags and use the SOLUS template to position the sensor. We move the sensor around early in the cycle to spot any issues with our drip irrigation emitters. Later in the cycle we leave the Teros 12 sensor in place and take spot reading which we save to our phone for reference.

Rockwool Cubes

Rockwool has become popular due to the fact that it is easy to work with, cleaner than soil or coco, and is the most stable medium to use in terms of water content and drying speed. It is also the simplest to take readings from using the Teros 12.

We are currently experimenting with 4" rockwood cubes in 3 gallon cloth bags. We add coco to fill out the void spaces around the 4" cube. We've had great success with this approach and the cubes retain water longer. This has cut our irrigation cycles in half.

View Product

Our Test Garden

We committed to running full grow cycles with the SOLUS to see what we could learn.

First Hand Experience

We have a test garden in our Seattle showroom. We've been using the Teros 12 and SOLUS app to grow a dozen cherry tomato plants (we're limited in this location). We've used the same grow strategies cannabis growers use in large scale gardens.

We use the Teros 12 daily to read the WC and EC levels in 3 gallon fabric bags filled with coco surrounding 4 inch rockwool cubes. The plants were started from seed.

We built watering and feeding times using the SOLUS data.

We adjust the schedules every week. As the plants grow larger they demand more water and nutrition. We would have no way to know the correct level of nutrients without the Teros 12 and SOLUS.

Using the Teros 12 In Your Garden

Bulk EC versus Pore EC

Bulk EC: EC measured in solution or runoff is measured using a different sensor than the Teros 12. This measurement is called Bulk EC. (The Teros cannot be used to measure EC outside of the growing medium.)

We recommend that you have a sensor for Bulk EC as well.

Bulk EC is measured with a sensor calibrated to read in ms/cm which is a measure of liquid electrcial conductivity.

Runoff EC levels do not accurately predict the EC level in the grow medium because of chemical reactions in the medium itself, the amount of water that the growing medium can hold and the rate of drying back.

Pore EC: The Teros 12 sensor measures EC levels using a Pore Water calibrated measurement in ds/m, a measurement in growing mediums. Ds/m and ms/cm measurements are equivalent and can be compared 1:1 to each other. Even though each sensor is different.

Bulk EC levels will be higher when nutrients levels are being raised to reach the ideal balance in the grow medium.

EC Levels In Your Grow 

Ideal EC levels in soil/soiless are generally as follows;

The study of EC and WC levels is evolving. These are currently the safe zone however gardeners who are experimenting with higher levels during the generative (flowering) phase as they learn how to steer certain strains to maximum crop yield potential. For high performance pulse feeding and watering in rockwool add 6 ds/m to the Flowering EC target levels noted below. This is for advanced gardeners using automated feeding adn watering. 

Starts/Clones

• EC levels for seedlings and young veg plants is around .5-.8 ds/m. Stay at this level until the plants develope 6-8 leaf sets and are fully rooted.

Veg
• Increse to 1.1-1.5 ds/m through vegitative phase.

Flowering
• Boost the EC level to 2.0-2.5 ds/m through flowering.

Pre-Flush
• 1.8- 2.2 ds/m through to flush after which point EC measurements are not necessary.

When To Measure EC

View Product

Watering and Drying Back Concepts

Grow mediums dry at different rates based on many factors like continer type, volume, plant size and temperature.

Choosing the best time to measure EC during dry-back is important. Measuring immediatly after watering is not recommended becasue EC rises as the medium dries back. Waiting too long won't provide good information on EC levels but it is useful when setting irrigation schedules.

Minimum Water Content

The Teros 12 sensor is most accuate when water content (WC) is above 17%. Levels below 17% confuse the sensor as salts build up around the stainless steel prongs.

Water content in grow mediums below 20% would be extremally low and unhealthy for the plants.

We've experimented with letting rockwood and coco moisture levels go below 20%. They weigh practically nothing, dipping a finger in feels completely dry. And it is nearly impossible to resaturate them to 50% with drip irrigation. If the levels go this low the plant is likely not going to make it.

Maximum Water Content

Choosing the maximum water content level depends on the grow medium's ability to hold water.

Rockwool and Coco Coir have similar moisture content holding ability.
Both are fully saturated at 60% WC and will dry back to about 30%. It is very difficult to get either back to the 60% saturation level with drip irrigation.

When to check WC Levels

Measuring WC helps set watering intervals and amounts. We recommend a low threshold of 35% water content and then re-watering.

We leave the Teros 12 sensor in the same grow container and take readings every hour at two hours after watering to watch the water content move towards 35%. When it does we program the drip system for this length of time, and adjust the minutes of watering.

2 hours dryback + amount of time to dry to 35% = the weekly watering interval.
We keep an eye on the plants with additional WC readings towards the end of the week and if they are stripping the medium of water we increase the minutes of water from our emitters.

The upper threshold depends on the medium, and generally we aim for 45-50% with coco or rockwool before stopping the watering and starting the dry-back.

When to check EC Levels

Generally it is best to check EC between one and two hours after the last watering schedule as the medium will no longer be draining off and the EC level will be stable and the most accurate.

Water / Feed Schedule Setting

After several weeks of mutiple readings per day we program our auto-drip irrigation system to reach 45-50% WC.

Our garden has a dozen 3 gallon pots with a pair of emitters at .5 gph.
We look at the EC levels 1-2 hours later (it does not change much in that time). Then we adjust the fertigation injectors up or down based on the plant phase EC target.

Remember that if you measure EC when WC is below 20% you will not have an accurate number so disregard EC at very low water content levels. And also at fully saturated levels.

Bring the level back to the upper WC threshold and dry-back before measureing EC. Then adjust feeding as required to maintain the EC target.

Flood versus Pluse Watering

EC and WC targets remain the same for either type of watering strategy.
Pulse watering becomes necessary with larger plants to keep the grow medium from drying out too far which is unrecoverable.

Crop Steering - Managing Plant Stress For Yield

This is a topic for another post. Crop steering tactics are used together with pulse watering and feeding schedules to intentionally stress the plant. Cycling between low minimum water levels results in a competitive growth response in the plant which improves yield.

View Product

 

 

Premium Quality For Growing

More Products

FGI Far Red LED Grow Light. 700-760nm Spectrum Enhancer.
FGI
FGI Far Red LED Grow Light. 44" premium quality. 700-760nm Spectrum. $ 107.00 $ 116.00
Overview  This rugged, well constructed far red LED is the most popular single color grow light on the market today. As compared to the cheaply made 660nm red light strips being sold online, this unit stand apart in the crowd.  Use our far red lightbar to either manage aspects of plant growth, or to increase overall PAR when paired with full spectrum LEDs. About Growing with Far Red Energy Far-red light is good for plant growth. It can increase photosynthesis, enhance growth, and increase plant size. Far-red light is significant to plants because it increases the ability of plants to capture light. Plants use light not only as a source of energy, but also for information about the surrounding environment. Far-red light can also regulate leaf angle and increase plant height and leaf area, via expression of associated genes, to capture more light energy. The lightbar features a crystal lens that covers the diodes, making it waterproof and resistant to overspray. Additionally, the lightbar is designed to be easily moved and bumped around, making it one of the most versatile and user-friendly grow lights on the market. The science of using far red light on plants Recent studies at the University of Texas El Paso / University of Texas Arlington, concluded that plants exposed to full spectrum plus dosing with far red spectrum, increased overall plant mass/yield and also improved terpene profiles. Read the study here. The light coverage of this product is unmatched. It will fully cover a 4' wide grow tray in bloom and generally covers a 2' wide swath. We recommend a pair for each 4x4 grow space and this unit comes with hardware which allows you to position it inside the frame of most 5 and 8 bar full spectrum LEDs. This light system is one of the best on the market and will give your plants the light they need to thrive. Order now and be sure to get your grow space set up correctly so you can achieve maximum light coverage. Targeting the Emerson Effect. The Emerson Effect is the name given to the increase in the rate of photosynthesis that occurs when chloroplasts are exposed to far red energy just before the nighttime lights off cycle. This effect was first discovered by scientist Alexander Emerson in 1883, and it has since been extensively studied by plant biologists. While the Emerson Effect is typically associated with increases in photosynthesis, it can also lead to other changes in plant physiology, such as increased cell division and growth. One way to take advantage of the Emerson Effect is to use our supplimental far red LED grow light for 10-15 minutes after full spectrum lights are turned off. If you are looking to create the ideal environment for your plants, an LED grow light can help you to achieve the Emerson Effect.   Far Red Spectrum General use: Studies indicate that dosing with far red light is most effective with 4 hours on, 4 off, and 4 on. We recommend a digital wall timer, or if using TrolMaster the DSP-1 (for 110V connections) or a DSP-2 (for 240V).  Emerson Effect:  10-15 minutes after full spectrum lights are turned off. Plant Morphology Theory Plants use phytochrome to detect and respond to red and far-red wavelengths. Phytochromes are signaling proteins that promote photomorphogenesis in response to red light and far-red light. Phytochrome is the only known photoreceptor that absorbs light in the red/far red spectrum of light (600-750 nm). (source: Wikipedia) Far Red light is believed to create a competitive response in plants, pushing desirable terpene production and assisting in the formation of trichomes.   Read more about Far Red and extended spectrum in this recent release from Design Lights Consortium: Read It Here   ~Technical Specs~ Product 30W(±5%) PPF 72.1 umols/s  100-277VAC,50/60 Hz 102.3BTU IP65 44.88”x 2.24”x 1.53” 4.4 lbs Photometric Test Report Download  Product Warranty (see our warranty here) 3 year warranty
Square 2 LED Grow Light. 220W. High Output. 2'x2'. With Far Red Too.
FGI
FGI Square 2 LED Grow Light. 220W full spectrum plus far red diodes. $ 174.00 $ 229.00
Affordable, compact, extended far red spectrum LED grow light for plants of all types.    Growing tomatoe starts with the FGI Square 2   The FGI Square 2 is an excellent entry level LED grow light for those looking to give their plants the sun's energy. Unlike other lights on today’s market that only provide certain colors needed by plant life (or lack thereof), this one provides all the necessary components: red, orange, yellow green and blue spectrum which together make up the building blocks for successful photosynthesis (and closely matches our sun).  If you are looking for an easy to use LED to learn how to grow any plant types indoors, look no further than the FGI Square 2. Well loved by gardeners everywhere. Designed in the USA by Forever Green Indoors in Seattle WA. Plant lighting LED light experts since 2013. Use the Square 2 to grow all types of plants. Placing the light closer to the plants provides enough energy to match the summer sun. Pulling the light further away, or using the built in dimming, provides the right energy for starts and seedlings.  Learn more about the FGI Square 2 on our YouTube Channel here:  The Square 2 is one of the more efficient grow lights on today's market, using only 220 watts! This means it can produce far less heat than higher wattage lamps. We designed it to deliver the perfect balance of light. It's full spectrum white LEDs help plants grow healthy while adding 5% total deep as well as far-red diodes for an extended range that will optimize your plant growth! Key Features:  Compact size: 20" x 20" x 3" Lightweight: 10 lbs  Built in dimming knob: Adjusts levels for young to mature plants.  Spectrum: Full spectrum plus 5% 660nm deep red plust 730nm far red LED diodes.  Includes: 110V power cord. Two clip and steel cable wire hangars. Product manual.    Technical  PAR Chart at 24" From Diodes The right kind of light can make all the difference for your plants. Flowers, fruits and other high energy use types require levels as high as 1000 PPFD - a measurement that approximates natural sunlight. Spectrum From Our Sun   We design grow lights to closely mimic natural sunlight (shown above). Although it's not possible to exactly duplicate a giant burning ball of hydrogen, we get as close as possible with the Square 2.   Spectrum from the Square 2     Don't wait! We have limited stock on this LED. Buy yours today.     ~Technical Specs~ProductDiodes (White) Brand name: Shenzhen LidedaNumber of pieces 360Total Diode Wattage Capacity (not actual draw) 300WMaximum Advertised Wattage 300Equivalent Wattage 1000CCT 4000KCRI 80CRIOther color Diodes (Red)Brand Name: Shenzhen LidedaNumber of pieces 96CCT NAWavelength 655-665nmOther color Diodes (FR) Brand Name: Shenzhen LidedaNumber of pieces 24CCT NAWavelength 730-745nmRatio mix white/red (%) 3:1 Projected Diode Lifetime (L-90) - in hours 50,000 hours Photosynthetic Light Measurements PPF Output* 436.1 umol/sPPF Efficacy* PPF 2.1umol/J PPFD Output 900 umols/ms at 24" below diodes Photopic Light MeasurementsLuminous Flux* 30342lmLuminous Flux Efficacy 151.7lm/w Other Input Power Watts 218Input Voltage 110VCord length 8' (2.44m, 18AWG )Plug type (note if bare whip) Molded 110V Product Dimensions Dimensions W x L x H (inches) 20x20x3.5Weight (pounds) 10Operating Temp range (F) -20℃ — +40℃IP rating (UL-ETL or estimated final UL-ETL)IP(UL- UL-ETL) IP20 Physical Dimensions Package Dimension W x L x H (inches) 24x23x5Inner carton (Yes/No) NOInner Carton Weight NOMaster Outer carton (Yes/No) YESNumber of pieces in Master Carton (1, 2, 3) 1Master carton weight (lbs) 2 Dimming / Tuning Dimming (Yes/No) Yes Product Warranty (against manufacturing defects) 3 years Warranty does not include coverage for damage caused by water or exposure to VOC's or electrical damage caused by voltage spikes. We recommend using a basic power surge suppressor such as those found on power strips to protect your light from utility power outages. 
FGI UV LED Grow Light. 340-400 nm Extended Spectrum for plant growing.
FGI
FGI UV LED Grow Light. 340-400 nm Extended Spectrum for plant growing. $ 107.00 $ 116.00
DESCRIPTION Rugged, waterproof, glass lens, 100-277 VAC. This unit is built to last.  Designed to match natural sunlight levels, the FGI UVA LED Grow Light offers extended spectrum Supplemental Blue 340-400 nm with an added PAR Booster to ensure optimal absorption of the light energy. Perfect for indoor growers and plant enthusiasts! The reason for this is that plant morphology is affected by the spectral composition of light, which means that different wavelengths of light can promote different plant growth. In particular, blue light is known to encourage compact growth and strong stems, making it an essential part of plant development. By providing plants with the same level of blue light as they would receive from the sun, the FGI 385nm UV Lightbar ensures that they can grow and develop in the best possible way. As a result, it is an invaluable tool for any gardener or plant lover who wants their plants to thrive. Science behind using UV-A supplemental energy on plants Recent studies at Utah State University have shown that plants absorb and benefit from light between 380-740NM. This research has led to the study of E-PAR or extended PAR and is redefining measurement of photosynthetic light.  Below are the spectrum charts which compare natural sunlight to full spectrum LEDs and then to full spectrum plus supplemental UV.  The result is a closer match to sunlight providing more of the beneficial blue light that plants benefit from.  Sunlight Levels of 380NM UV Natural sunlight provides plants 1.22 umols of 380nm blue energy.  Natural Sunlight Spectrum Blue Energy 1.2234 umols Typical Full Spectrum LED Lack 380NM UV Full spectrum LEDs have limited blue spectrum which peak at 460nm.   Full Spectrum LED 460nm Blue Energy Levels .0514 umols Full Spectrum LED with Supplemental 380NM UV  Adding supplemental 385NM UV creates a secondary peak of blue energy at 1.5047 umols at 12" from the canopy, roughly equaling natural sunlight.  Supplemental UV Spectrum plus Full Spectrum Blue Energy 1.5047 umols (3x greater)  Build Quality These are high quality units with a crystal glass lens cover to protect the diodes and allow for cleaning. The all aluminum frame dissipates what little heat the bar creates. At 30 watts the Lightbar sips energy too.  Spectrum Theory  Blue energy is scientifically known to help form more compact plants. More lush leaf growth, stronger and larger stems and tighter internodal spacing. We gave a prominent researcher at a major State University one our 385NM UVA Lightbars:  "Your UVA lights arrived and we have confirmed their 385 nm peak. This looks like a high quality fixture." He went on to say: "Elevated exposure to UV photons is known to enhance the synthesis of UV blocking compounds in the leaves of many species and it is reasonable to think that UV photons can increase the synthesis of secondary metabolites in plants." And further, "I expect we will find value in dosing of CSat plants with UV photons, but not surprisingly, the effects will likely interact with UV wavelength, intensity, timing of delivery, and growth stage." The UVA Lightbar fits neatly inside the frame of our Uniformity Pro LEDs as well as many other multi-bar style full spectrum LEDs. Use We recommend two of our UV-A LEDs over each 4'x4' area. The slim design allows them to be hung inside the frame of most 6 and 8 bar LEDs. Mounting height should be at the same level to avoid creating shadowing.  Control A basic digital 110V wall timer can be used, or if using the TrolMaster Hydro X we recommend the DSP-1 module for 110V or DSP-2 for 120V power connection and multiple on/off timer programming.   ~Technical Specs~ Product 30W(±5%) 20 UVA Diodes Per Bar 100-277VAC,50/60 Hz 102.3BTU IP65 44.88”x 2.24”x 1.53” 4.4 lbs Photometric File Download Product Warranty (see our warranty here) 3 year warranty
FGI Far Red LED Grow Lights 44” long. Waterproof. 700-760nm. Plants, aquariums, mushrooms.
FGI
FGI Far Red LED Grow Light Set 44” Commercial-grade 700-760nm. Plants, aquariums, mushrooms. $ 215.00 $ 224.00
The FGI Far Red LED Grow Light is the best dedicated far red LED grow light on the market today. Compare it to the cheaply made 660nm red LEDs being sold online and the difference is clear. About Growing with Far Red EnergyFar-red light is good for plant growth. It can increase photosynthesis, enhance growth, and increase plant size. Far-red light is significant to plants because it increases the ability of plants to capture light. Plants use light not only as a source of energy, but also for information about the surrounding environment.Far-red light is typically not absorbed much by plant leaves, and it doesn't drive any photosynthesis because it is mostly reflected off leaves. However, if a plant "senses" a greater ratio of far-red to normal light then it "knows" that obstructions or other plants are close to it.Far-red light can also regulate leaf angle and increase plant height and leaf area, via expression of associated genes, to capture more light energy. If you're serious about getting the most out of your plants, you need to make sure they're getting the right kind of light. Our far red LED grow lightbar is specially designed to boost photosynthetic light levels in both veg and flower. Adding two of these bars to your 4x4 grow space will lift PAR by 10%. This means healthier plants and bigger yields come harvest time. So if you're ready to take your growing operation to the next level, pick up our far red LED grow lightbar today. You won't be disappointed. Use far red energy in veg to keep plants compact and strong. Recent studies at Utah State University by Dr Bruce Bugbee, have proven that additional energy, even in the red spectrum, keeps plants more compact.  The science of using far red light on plants Recent studies at the University of Texas El Paso / University of Texas Arlington, concluded that plants exposed to full spectrum plus dosing with far red spectrum, increased overall plant mass/yield and also improved terpene profiles. Read the study here. The light coverage of this product is unmatched. It will fully cover a 4' wide grow tray in bloom and generally covers a 2' wide swath. We recommend a pair for each 4x4 grow space and this unit comes with hardware which allows you to position it inside the frame of most 5 and 8 bar full spectrum LEDs. This light system is one of the best on the market and will give your plants the light they need to thrive. Order now and be sure to get your grow space set up correctly so you can achieve maximum light coverage. Targeting the Emerson Effect. The Emerson Effect is the name given to the increase in the rate of photosynthesis that occurs when chloroplasts are exposed to far red energy just before the nighttime lights off cycle. This effect was first discovered by scientist Alexander Emerson in 1883, and it has since been extensively studied by plant biologists. While the Emerson Effect is typically associated with increases in photosynthesis, it can also lead to other changes in plant physiology, such as increased cell division and growth. One way to take advantage of the Emerson Effect is to use our supplemental far red LED grow light for 10-15 minutes after full spectrum lights are turned off. If you are looking to create the ideal environment for your plants, an LED grow light can help you to achieve the Emerson Effect.   Far Red Spectrum Use We recommend 2 units per 4x4 grow space for daytime enhanced PPFD delivery. Height over canopy should be the same as your full spectrum LED but it will not hurt the plants to hang beneath a 4x4 LED.  Time General use: Studies indicate that dosing with far red light is most effective with 4 hours on, 4 off, and 4 on. We recommend a digital wall timer, or if using TrolMaster the DSP-1 (for 110V connections) or a DSP-2 (for 240V).  Emerson Effect:  10-15 minutes after full spectrum lights are turned off. Plant Morphology Theory Plants use phytochrome to detect and respond to red and far-red wavelengths. Phytochromes are signaling proteins that promote photomorphogenesis in response to red light and far-red light. Phytochrome is the only known photoreceptor that absorbs light in the red/far red spectrum of light (600-750 nm). (source: Wikipedia) Far Red light is believed to create a competitive response in plants, pushing desirable terpene production and assisting in the formation of trichomes.   Read more about Far Red and extended spectrum in this recent release from Design Lights Consortium: Read It Here ~Technical Specs~ Product 30W(±5%) PPF 72.1 umols/s  100-277VAC,50/60 Hz 102.3BTU IP65 44.88”x 2.24”x 1.53” 4.4 lbs Photometric Test Report Download  Product Warranty (see our warranty here) 3 year warranty
FGI Flexi-clone LED grow light for seedlings and plant starts
FGI
FGI 4’ 20W LED grow light set for clones and seedlings. Linkable. $ 89.95 $ 110.00
The FGI Flexi-Clone LED grow light is designed to give plant starts the best chance of succeeding. Featuring quality made LED lighting for a reliable outcome, this light is perfect for seedlings, clones, and plant starts. Our 4' long grow bars are able to interconnect, or can be used independently.  Link additional bars side-by-side to increase photosynthetic light intensity. Two bars are perfect for new starts. Four bars work well for younger plants or more light sensitive varieties.  Combine up to 30 Flexi-Clone bars on a single 120/240V plug to run your entire plant propagation area without needing dozens of sockets.  High quality all aluminum construction. Solid state, fanless and driverless design.  LED diodes protected from moisture with a conformal coating. Accidental spray won't affect them at all.  3 year warranty against defects.  Water resistant light to light connectors. Clip on hanging bracket included.  Compare the Flexi-Clone to other plastic seedling lights and you'll see why people choose the flexi-clone system instead. Here is our grow light spectrum compared to the sun and other lighting styles. You can see why plants thrive under our grow spectrum. We more closely match natural sunlight.  The FlexiClone system is fantastic. Your plants will love this light.  Sold as as set of two bars, use two of the Flexi-clone bars to cover 4' x 2' of area.  We stand behind our lights with a 365 day money back guarantee.   Unboxing and Installation Video  ~Technical Specs~ Product FGI Flexi Clone LED Grow Light (set of two) Light Source LED Spectrum 4506 CCT Warm White / Neutral White mixPhotosynthetic Light MeasurementsPPF Output* 69 umols/ms PPF Efficacy* 2.30 Umol/sec/wPPFD @ 12" 115 Umol/m²/sFixture coverage ( max intensity / max uniformity )* 4' x 1' per LED / 4' x 2' per set of two LEDsPhotopic Light MeasurementsLuminous Flux* 8,229 LumensLuminous Flux Efficacy* 136.2 Lm/wIlluminance @ 12" 32,069 LuxOtherInput Power 25 watts per barInput Voltage 100-277VAC autosensingDimensions 47.2”x 1.89”x 1.3”Weight 1.1 lbsOperating Temp range 32 F - 104 FThermal Management PassiveRecommended Mounting height 12" for one set. Add additional bars to increase light levels and mounting heights. Dimming / Tuning No Product Warranty (see our warranty here) 3 years
FGI Square 320W Smart LED Grow light full spectrum plus dark red booster built-in
FGI
FGI Square 320W Smart LED Grow light built-in WiFi connectivity. $ 242.00 $ 349.00
For both entry level and experienced growers. The innovative square design of the FGI Square 3 provides excellent light coverage and intensity over 3'x3' in flower, so you can be sure your plants are getting everything they need to thrive. The easy to use wifi module allows control using your phone with our free Cloud Intelligence App. The extended far-red spectrum delivers all the wavelengths your plants need for healthy growth, and the built-in dimming function allows you to customize the light output to suit your plants' needs. Our 365-day money back guarantee ensures that you are fully protected with Forever Green Indoors. Here is a comparison to natural sunlight and fluorescent lighting.  Forever Green's time tested grow light spectrum comparison  Our WeatherEFX Cloud Intelligence WiFi controller allows you to mimic natural weather, like sunrise and sunset to optimize plant growth.  Learn more about WeatherEFX, and the Cloud Intelligence App on YouTube here:    Square 3 Product Manual  Wifi Controller Manual and Troubleshooting Guide  FEATURES Lightweight - just 13 lbs Slim - 3" deep Cool - won't add too much heat 4 push button dimming settings COVERAGE The Square 3 is designed for flowering in 3'x3' spaces at up to 1000 umols/ms. (CO2 recommended for this light level). Or grow at 800 umols/ms without CO2. It can be used for Veg when dimmed. And when fully dimmed can be used over clones and starts too.Below are PAR readings with the lights at three different distances. At 24" expect PPFD to be above 1000 umols/ms, but not as uniform. At 30" PAR will be above 750 umols/ms. This is an ideal light level if not using supplemental CO2. These levels are equal to a typical HPS grow space.At 36" light levels become more uniform from corner to corner but at 680 umols are below what we'd recommend for flower.At 48", light levels are the most uniform and are perfect for mature veg plants. Use the built in dimmer to reduce intensity for young veg plants. Product Manuals:  Square 3 Product Manual  Wifi Controller Manual and Troubleshooting Guide  SPECIFICATIONS FGI Square 3 WiFi LED Grow LightDiodes (White)Diodes Brand name: Shenzhen Lideda Number of pieces 960 CCT 4000K CRI 80CRI Other color Diodes (Red) Brand Name: Shenzhen Lideda Number of pieces 256 CCT NA Wavelength 655-665nm Other color Diodes (FR) Brand Name: Shenzhen Lideda Number of pieces 64 CCT NA Wavelength 730-745nm Ratio mix white/red (%) 3:1Product Warranty/Longevity Warranty (years) 5 years Lifetime (L-90) - in hours 50,000 hours Photosynthetic Light Measurements PPF Output* 1120 umol/s PPF Efficacy* PPF 2.38umols/j Photopic Light Measurements Luminous Flux* 67,000 lm Luminous Flux Efficacy 168 lm/w Other Input Power Watts 320W Input Voltage 110V Cord length 8' (2.44m, 18AWG ) Plug type (note if bare whip) Molded 110V Product Dimensions Dimensions W x L x H (inches) 22 x 22 x 3.5 Weight (pounds) 13 Operating Temp range (F) -20℃ — +40℃ IP rating IP20 Rating CSAPhysical Dimensions Package Dimension W x L x H (inches) 27 x 26 x 6.5 Dimming / Tuning: Push button / Wifi App Product Warranty: 3 years against defects. See our warranty policy page for details. 
FGI UVA LED Grow Light Set. 44”. Waterproof. 340-400nm. Plants, aquariums, mushrooms.
FGI
FGI UVA LED Grow Light Set. 44”. Waterproof. 340-400nm. Plants, aquariums, mushrooms. $ 215.00 $ 224.00
DESCRIPTION Rugged, waterproof, glass lens, 100-277 VAC. This unit is built to last.  The FGI 385nm UV Lightbar is designed to provide targeted supplemental blue energy to equal natural sunlight levels. At Forever Green, we strive to match natural sunlight with our lighting products. The reason for this is that plant, corals and mushroom morphology is affected by the spectral composition of light, which means that different wavelengths of light can promote different growth characteristics. In particular, blue light is known to encourage compact growth and strong stems, making it an essential part of plant development. By providing plants with the same level of blue light as they would receive from the sun, the FGI 385nm UV Lightbar ensures that they can grow and develop in the best possible way. As a result, it is an invaluable tool for any gardener or plant lover who wants their plants to thrive. Science behind using UV-A supplemental energy on plants Recent studies at Utah State University have shown that plants absorb and benefit from light between 380-740NM. This research has led to the study of E-PAR or extended PAR and is redefining measurement of photosynthetic light.  Below are the spectrum charts which compare natural sunlight to full spectrum LEDs and then to full spectrum plus supplemental UV.  The result is a closer match to sunlight providing more of the beneficial blue light that plants benefit from.  Sunlight Levels of 380NM UV Natural sunlight provides plants 1.22 umols of 380nm blue energy.  Natural Sunlight Spectrum Blue Energy 1.2234 umols Typical Full Spectrum LED Lack 380NM UV Full spectrum LEDs have limited blue spectrum which peak at 460nm.   Full Spectrum LED 460nm Blue Energy Levels .0514 umols Full Spectrum LED with Supplemental 380NM UV  Adding supplemental 385NM UV creates a secondary peak of blue energy at 1.5047 umols at 12" from the canopy, roughly equaling natural sunlight.  Supplemental UV Spectrum plus Full Spectrum Blue Energy 1.5047 umols (3x greater)  Build Quality These are high quality units with a crystal glass lens cover to protect the diodes and allow for cleaning. The all aluminum frame dissipates what little heat the bar creates. At 30 watts the Lightbar sips energy too.  Spectrum Theory  Blue energy is scientifically known to help form more compact plants. More lush leaf growth, stronger and larger stems and tighter internodal spacing. We gave a prominent researcher one of our UV-A LEDs and he said:  "Your UVA lights arrived and we have confirmed their 385 nm peak. This looks like a high quality fixture." He went on to say: "Elevated exposure to UV photons is known to enhance the synthesis of UV blocking compounds in the leaves of many species and it is reasonable to think that UV photons can increase the synthesis of secondary metabolites in plants." And further, "I expect we will find value in dosing of CSativa plants with UV photons, but not surprisingly, the effects will likely interact with UV wavelength, intensity, timing of delivery, and growth stage." The UVA Lightbar fits neatly inside the frame of our Uniformity Pro LEDs as well as many other multi-bar style full spectrum LEDs. Use We recommend two of our UV-A LEDs over each 4'x4' area. The slim design allows them to be hung inside the frame of most 6 and 8 bar LEDs. Mounting height should be at the same level to avoid creating shadowing.  Control A basic digital 110V wall timer can be used, or if using the TrolMaster Hydro X we recommend the DSP-1 module for 110V or DSP-2 for 120V power connection and multiple on/off timer programming.   ~Technical Specs~ Product 30W(±5%) 20 UVA Diodes Per Bar 100-277VAC,50/60 Hz 102.3BTU IP65 44.88”x 2.24”x 1.53” 4.4 lbs Photometric File Download Product Warranty (see our warranty here) 3 year warranty
FGI Factory Direct:  Hortibest H3 2x4 Full Spectrum 170W LED Grow Light System for Veg. Linkable.
HortiBest
FGI Factory Direct: Hortibest H3 2x4 Full Spectrum 170W LED Grow Light System for Veg.... $ 499.00 $ 499.00
Unlock a new level of savings with our premium quality factory-direct FGI Hortibest LED grow lights. Get great performance at prices that cut out the middle man. Shop and experience the Hortibest difference. Hortibest H3 Slimline 170W Veg LED Grow Light. Perfect for a 4' x 2' space, this veg light is AC daisy chainable for easy installation. With a highly uniform PPFD value, it's ideal for vegetative growth, and the slim design means it won't take up too much space in your grow room. Don't let your plants suffer from poor lighting - invest in a Hortibest LED grow light today! Highlights: Fanless Design IP65 Water and dust resistent Dimmable: 0-10V Daisy Chain Dimming Daisy Chain AC Power Connection OSRAM LED Diodes Input Voltage:120-277VAC Slim Internal Power Supply Design Uniform PPFD distribution over a 2'x4' area DLC listed  The Hortibest Octopus H3 will help your plants reach their full potential. With a sturdy, sleek internal driver design, and a range of adjustable settings, this grow light is sure to give your plants the boost they need to grow strong and healthy. If you're ooking for a gentle, uniform light spectrum perfect for veg phase growth, look no further than Hortibest's Octopus H3. The H3 is designed to completely cover a 4' wide tray with consistent light distribution, making it perfect for your indoor horticulture needs. With PPFD of 500 umols/ms, your plants will be getting the ideal amount of light for optimal growth. Don't let sub-par lighting stop you from getting the most out of your plants - trust the Octopus H3 for all your veg growing needs.  Link to PDF spec sheet Tech Specs: DLC Listed: H3 170W: OC-H-170A FSG 26 D1 170W 2.5 umols/j PPF 425 umos/ms Osram LED Diodes  Proprietary built in driver (enclosed in light rails) AC power pass through for AC Daisy Chain Dimensions: 47 x 18 x 2 inches Weight: 7.9Ibs  Built in pre-set dimming knob + on/off Dimming: 0-10V Daisy Chain. RJ-14 light to light cable included L90: > 50,000hrs Saftey Certiification: ETL  

60 DAYS EASY RETURNS

FREE US SHIPPING

FAST CHECKOUT

SAME DAY FULFILLMENT

(Orders before 11am pst)