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Free Shipping on most orders over $175 | Sales Tax in NJ only

Adjustable Spectrum Grow Lights

Tunable spectrum LED grow lights let growers fine-tune wavelength ratios for different stages of plant growth. Do you need more blue during vegetables to keep internodes tight? More red and far-red for explosive blooms? These grow lights let you dial in the ideal blend.

Spectrum plays a role in shaping plant height, leaf expansion, and pigment expression. Adjustable grow lights allow precise control in dynamic grow environments. Ideal for serious growers chasing optimal morphology and performance across a 2×2 to 5×5 ft space.

Grow smarter with bulk discounts and rebate opportunities only at Grow Light Central.

GrowPros Phoenix 900W LED grow light spectrum chart with UV, full spectrum, far red, and PPFD map at 12-inch height.
Front view of the GrowPros Phoenix LED Grow Light with the lights exposed, showcasing the full LED array layout for balanced light distribution. Save $179.00 Save $0.00
$899.00
$899.00 - $899.00
$899.00
$720.00
$720.00 - $720.00
$720.00

GrowPros Phoenix Dual Channel 900W LED Grow Light - UVA & Full Spectrum + Far Red + Deep Blue

GrowPros

Offering 3 power modes, dual channel spectrum control, 3.1 µmol/J efficiency, and full-spectrum output with UV and Far Red for maximum plant growth...

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$899.00
$899.00 - $899.00
$899.00
$720.00
$720.00 - $720.00
$720.00
Save $179.00 Save $0.00
GrowPros DraGrow 2 1350W LED grow light spectrum chart with UV, full spectrum, far red, and PPFD map at 12-inch height.
Top view of GrowPros DraGrow 2 Channel LED Grow Light with full spectrum UV + IR bars illuminated 1350 Watts & 18% off
$1,199.00
$1,199.00 - $1,199.00
$1,199.00
$959.00
$959.00 - $959.00
$959.00

GrowPros DraGrow Dual Channel 1350W LED Grow Light - UVA & Full Spectrum + Far Red + Deep Blue

GrowPros

Offering three power modes, UV and Far Red, dual dimming channels, and 3.02 µmol/J efficiency for powerful 4x6 canopy coverage. The Dragrow 4x6 Ful...

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$1,199.00
$1,199.00 - $1,199.00
$1,199.00
$959.00
$959.00 - $959.00
$959.00
Save $240.00 Save $0.00
960W UltraPro LED grow light spectrum chart with full-spectrum output and high PPFD readings for max light intensity.
Top-down view of UltraPro LED grow light fully lit, showing full diode coverage for consistent photosynthetic lighting. Save $150.00 Save $0.00
$799.00
$799.00 - $799.00
$799.00
$649.00
$649.00 - $649.00
$649.00

GrowPros UltraPro 960 LED Grow Light - 960/830/660 Wattage Adjustable

GrowPros

Delivers full-spectrum Far Red light with up to 3.23 µmol/J efficiency and three power modes for efficient vertical or hydroponic grows. The GrowPr...

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$799.00
$799.00 - $799.00
$799.00
$649.00
$649.00 - $649.00
$649.00
Save $150.00 Save $0.00
Close-up of the GrowPros 4′ Under Canopy Grow Light Model 3, featuring a sleek aluminum body and high-efficiency LED strip protected under a clear lens.
GrowPros 8′ Under Canopy Grow Light mounted on adjustable black floor stands, showcasing the dual-channel light bar in a clean side-angle view.
$195.00 - $220.00
$195.00 - $220.00
$195.00 - $220.00
$195.00

GrowPros 4' Cobra Under Canopy Grow Lights Model 3 - 150W Dual Channel UVA + Blue + 5000K / Deep Red + Far Red + 3000K

GrowPros

Push more light through your canopy layers using this compact 4ft dual-channel fixture built for B-bud boost and consistent growth below the tops. ...

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$195.00 - $220.00
$195.00 - $220.00
$195.00 - $220.00
$195.00
Angled view of the GrowPros 8′ Under Canopy Grow Light Model 3 showing the sleek aluminum body with integrated dual-channel LED strip.
GrowPros 8′ Under Canopy Grow Light mounted on adjustable black floor stands, showcasing the dual-channel light bar in a clean side-angle view.
$345.00 - $400.00
$345.00 - $400.00
$345.00 - $400.00
$345.00

GrowPros 8' Cobra Under Canopy Grow Lights Model 3 - 300W Dual Channel UVA + Blue + 5000K / Deep Red + Far Red + 3000K

GrowPros

Light up the entire canopy from top to bottom with this 8ft dual-channel fixture that boosts both veg and flower performance using UVA, blue, red, ...

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$345.00 - $400.00
$345.00 - $400.00
$345.00 - $400.00
$345.00
Close-up angled view of the GrowPros Model 4 4FT Under Canopy Grow Light showing the aluminum body, GrowPros Solutions branding, and power connector on one end.
Full horizontal view of the GrowPros Under Canopy Light mounted on a GrowPros Light Stand.
$195.00 - $265.00
$195.00 - $265.00
$195.00 - $265.00
$195.00

GrowPros 4' Viper Under Canopy Grow Lights Model 4 - 150W Dual Channel 80% Red + White / Far Red (730nm)

GrowPros

Boost bud quality and increase yields by lighting up the lower canopy with a compact dual-channel system designed for deeper, more uniform flower d...

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$195.00 - $265.00
$195.00 - $265.00
$195.00 - $265.00
$195.00
GrowPros Under Canopy Grow Light Model 4 showing dual red spectrum LED strips.
Full horizontal view of the GrowPros 8ft Under Canopy Light mounted on a GrowPros Light Stand.
$345.00 - $370.00
$345.00 - $370.00
$345.00 - $370.00
$345.00

GrowPros 8' Viper Under Canopy Grow Lights Model 4 - 300W Dual Channel 80% Red + White / Far Red (730nm)

GrowPros

Hit every layer of your canopy with dual-channel red, white, and infrared lighting to grow bigger buds, speed up flowering, and reduce labor at har...

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$345.00 - $370.00
$345.00 - $370.00
$345.00 - $370.00
$345.00
Angled view of multiple GrowPros GH1000 greenhouse lights suspended from a ceiling rail system, demonstrating scalable installation.
Bottom angle of the GrowPros GH1000 LED greenhouse light showing high-density diode array for maximum canopy penetration.
Save $424.00 Save $0.00
$1,099.00
$1,099.00 - $1,099.00
$1,099.00
$675.00
$675.00 - $675.00
$675.00

GrowPros GH1000 Dual Channel Greenhouse Supplemental Light - Blue White & Deep Red

GrowPros

Boost greenhouse yields with this 1000W dual-channel light that delivers powerful, spectrum-adjustable coverage across all seasons and grow stages....

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$1,099.00
$1,099.00 - $1,099.00
$1,099.00
$675.00
$675.00 - $675.00
$675.00
Save $424.00 Save $0.00

Frequently Asked Questions

Which adjustable LED grow lights are top-rated?

Look for spectrum-tunable LED lights that shift between Veg, Bloom, and Full Spectrum modes. Top units from brands such as Grand Master LEDs, GrowPro, and Scynce LED feature manual knobs or app control over blue, red, green, and far‑red channels, ensuring you only need one versatile fixture for all growth stage.

What are ideal preset recipes/settings for an adjustable grow light?

Use blue-heavy (~15–20% blue) in Veg mode to boost compact foliage; switch to Bloom/Flower mode rich in red (≥ 50%) with some far‑red to trigger flowering; full-spectrum white is great for transitions or mixed-phase grows.

How should I use adjustable spectrum grow lights effectively?

Hang lights at 24–36″ during Veg and 18–24″ during Flower (adjust per PPFD readings), choose Veg/Bloom presets or fine-tune channels, and match intensity to stage—e.g., dim during seedlings, ramp to full power in bloom.

Are there energy rebates or incentives for switching to adjustable-spectrum LED grow lights?

Yes! We offer a free eligibility check for rebates covering LED grow lights (including spectrum-tunable models), HVAC systems, and dehumidifiers.