ThinkGrow LED Grow Lights for Commercial Horticulture
ThinkGrow is a commercial horticultural lighting company focused on greenhouse and controlled environment agriculture (CEA) production, best known for their Model-H and Hotel series LED fixtures. ThinkGrow fixtures are designed with a dual-channel spectrum architecture -- separate control of white and far-red channels allows growers to adjust the spectral ratio delivered to plants, tuning light quality for different crop types and growth stages rather than running a fixed single-spectrum output. This spectral flexibility is particularly valuable in multi-crop commercial operations where different crop varieties respond differently to far-red supplementation.
ThinkGrow Model-H & Hotel Series
The ThinkGrow Model-H is a top-canopy LED bar array designed for commercial indoor and greenhouse production -- a high-output fixture achieving 2.8-3.0+ umol/joule efficiency with the dual-channel spectral architecture that distinguishes ThinkGrow from single-spectrum competitors. The Hotel series extends ThinkGrow's commercial lineup to larger commercial installations with higher output per fixture, designed for facilities running at high PPFD targets (above 1,200 umol/m2/s) for high-intensity crop production. Both are designed to pair with grow room air conditioning sized for their heat load -- use our AC/BTU Sizing Calculator to confirm cooling capacity. Both series are dimmable via 0-10V analog input, compatible with TrolMaster and other standard 0-10V dimming controllers. For comparison with other commercial LED options, see our updated best LED grow lights guide.
Spectral Flexibility for Multi-Crop Operations
ThinkGrow's dual-channel architecture separates the white phosphor LED channel from the far-red (720-740nm) supplemental channel, allowing independent control of each. Far-red wavelengths trigger the Emerson Enhancement Effect -- increasing photosynthetic efficiency beyond what the white spectrum alone achieves -- and influence flowering response and morphology in some crop varieties. By independently controlling far-red intensity, ThinkGrow fixtures allow commercial operators to dial in spectral ratios for specific crop varieties, apply end-of-day far-red treatments for controlled flowering management, or reduce far-red during periods when its morphological effects are not desired. This level of control requires a compatible dimming controller for each channel -- ThinkGrow fixtures ship with control documentation for compatible third-party controllers. Expert support available.
ThinkGrow FAQ
What makes ThinkGrow LED fixtures different from other commercial LEDs?
ThinkGrow's primary differentiator is their dual-channel spectral architecture -- separate control of the white phosphor channel and the far-red (720-740nm) supplemental channel. This allows commercial operators to independently adjust white and far-red output rather than running a fixed spectrum blend. Most commercial LEDs from Gavita, Growers Choice, and Faven use fixed-ratio spectra that include far-red in a set proportion. ThinkGrow's separation enables spectrum management for specific crop responses, end-of-day far-red treatments, and fine-tuned control that single-spectrum fixtures cannot provide.
What is far-red light and why does it matter for plant growth?
Far-red light (720-740nm wavelength) sits just outside the standard photosynthetically active radiation (PAR) range of 400-700nm but influences plant physiology significantly. Far-red triggers the Emerson Enhancement Effect -- when combined with red light, far-red increases the quantum yield of photosynthesis beyond what either wavelength achieves alone. Far-red also influences stem elongation (internodal spacing), shade avoidance responses, and flowering transition timing in photoperiod-sensitive crops. Including far-red at the right intensity can increase photosynthesis by 10-20% in some crops. Too much far-red drives unwanted stem elongation and morphological changes. ThinkGrow's dual-channel design allows growers to precisely control far-red contribution to tune these effects for their specific crops.
What canopy size does a ThinkGrow Model-H cover?
The ThinkGrow Model-H is designed for commercial-scale canopy coverage -- typically a 4x4 to 5x5 ft flowering footprint per fixture depending on the specific model wattage and your target PPFD. ThinkGrow publishes PPFD maps for their fixtures at multiple hanging heights. Use our PPFD & Light Coverage Calculator with the published PPFD data to confirm coverage for your exact canopy dimensions and target light intensity. For commercial facility design assistance and volume pricing, contact our expert team at 888-815-9763.
