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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.

Spectrum chart showing 12 preset light spectrums available on the Tarantula Voyager grow light for customized plant growth.
Top-down view of the Tarantula Voyager LED grow light displaying 10 evenly spaced LED light bars for full canopy coverage.
$1,149.00 - $1,149.00
$1,149.00
$1,149.00 - $1,149.00
$1,149.00

Grand Master LEDs Tarantula Voyager - Dual Channel

Grand Master LEDs

A commercial-ready LED grow light engineered for controlled intensity, uniform coverage and long term production reliability. This LED grow light i...

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$1,149.00 - $1,149.00
$1,149.00
$1,149.00 - $1,149.00
$1,149.00
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
Diagram of full power spectrum tuning with color spectra of Raging Kale II Plus LED grow light incorporating both 660nm red and 720nm red into the cultivation system.
This image shows the Scynce LED Raging Kale II+ grow light angled diagonally, highlighting its LED panel design and compact driver housing. Price drop
$399.00 - $419.00
$399.00
$399.00 - $419.00
$399.00 - $419.00
$399.00

Scynce LED Raging Kale II+ LED Grow Light

Scynce LED

Maximize growth and efficiency with this LED light designed for even distribution and enhanced flowering. The RAGING Kale II+ is a low-profile, hig...

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$399.00 - $419.00
$399.00
$399.00 - $419.00
$399.00 - $419.00
$399.00
This spectrum graph displays the full output of the Raging Kush II LED with all channels set to 100%.
This image shows the Raging Kush II LED grow light viewed from below, highlighting its modular light bars.
$854.00 - $854.00
$854.00
$854.00 - $854.00
$854.00

Scynce LED Raging Kush II LED Grow Light

Scynce LED

Achieve maximum growth control with customizable spectrums, precise intensity adjustments, and efficient light distribution. The Raging Kush II has...

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$854.00 - $854.00
$854.00
$854.00 - $854.00
$854.00
Spectral tuning diagram of Scynce DRAGON Alpha LED grow light with full power spectrum tuning and color temperature graphs.
This image shows the front view of the Scynce LED Dragon Alpha III Grow Light with visible LED panel arrays.
Price drop
$1,073.00 - $1,098.00
$1,073.00 - $1,098.00
$1,073.00 - $1,098.00
$1,073.00

Scynce LED Dragon Alpha III LED Grow Light

Scynce LED

Maximize yields with even light distribution, energy savings, and scalable installation. The DRAGON Alpha III takes precision growing to the next l...

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$1,073.00 - $1,098.00
$1,073.00 - $1,098.00
$1,073.00 - $1,098.00
$1,073.00
Diagram of full power spectrum tuning with color spectra of Raging Kale II LED grow light.
This image shows the Scynce LED Raging Kale II grow light angled diagonally, highlighting its LED panel design and compact driver housing.
Price drop
$349.00
$349.00 - $349.00
$349.00
$294.00
$294.00 - $294.00
$294.00

Scynce LED Raging Kale II LED Grow Light

Scynce LED

Maximize growth potential with uniform light distribution, energy efficiency, and seamless control. The RAGING Kale II is a low-profile, high-perfo...

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$349.00
$349.00 - $349.00
$349.00
$294.00
$294.00 - $294.00
$294.00
Save $55.00 Save $0.00
Purple and silver SL-830 LED grow light showing energy use, spectrum, dimming, and IP65 rating icons.
Top-down view of the SecretLED SL-830 UV/IR LED grow light showing fully lit light bars.
27% Discount Inside
$1,249.00 - $1,249.00
$1,249.00
$1,249.00
$1,249.00 - $1,249.00
$1,249.00

SecretLED Lighting SL-830 UV/IR LED Grow Light

SecretLED

Fine-tune your spectrum with UV, IR, and full-spectrum dimming for advanced growth control, higher potency, and optimized flowering yield. The Secr...

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$1,249.00 - $1,249.00
$1,249.00
$1,249.00
$1,249.00 - $1,249.00
$1,249.00
PPFD map chart of Grand Master LEDs Tarantula Borg Evolution V2 for different heights with average PPFD values on a white background.
Image showing the four light spectrum channels and how they can be controlled independently.
Sold out
$1,300.00 - $1,300.00
$1,300.00
$1,300.00 - $1,300.00
$1,300.00

Grand Master LEDs Tarantula Borg Evolution V2 - 4 Channels

Grand Master LEDs

Dominate every stage with this 4-channel, 10-bar LED designed for commercial scale, spectrum control, and fast deployment. The Tarantula Borg Evolu...

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$1,300.00 - $1,300.00
$1,300.00
$1,300.00 - $1,300.00
$1,300.00
Sold out
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
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
Image showing various spectrum graphs for the Grand Master LEDs Tarantula Explorer with multiple light configurations ranging from 320nm to 800nm.
Image showing the top-down view of the Grand Master LEDs Tarantula Explorer LED light fixture, emphasizing its spread of light bars for optimal coverage.
$949.00 - $949.00
$949.00
$949.00
$949.00 - $949.00
$949.00

Grand Master Tarantula Explorer LED Grow Light - 1400 Watts & Dual Channel

Grand Master LEDs

Optimize commercial grows with dual-channel LED, waterproof IP66 design, and fast setup for any indoor environment. The Tarantula Explorer is a pow...

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$949.00 - $949.00
$949.00
$949.00
$949.00 - $949.00
$949.00
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
Angled view of Fluence SPYDR 2r LED grow light showing six aluminum light bars and attached central PSU.
Angled wide shot of SPYDR 2r showing eight active light bars and black power cord mounted to center heatsink.
$535.00 - $535.00
$535.00
$535.00 - $535.00
$535.00

Fluence SPYDR 2r LED Grow Light - 47" PhysioSpec Broad R4

Fluence

Achieve high-efficiency indoor growth with 1600 µmol/s output and full-spectrum control for premium bud cultivation. The Fluence SPYDR 2r LED Grow ...

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$535.00 - $535.00
$535.00
$535.00 - $535.00
$535.00

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.