The Treegers GL LED is a full-spectrum grow light built from detachable LED bars that click magnetically into the frame. The driver is integrated into the fixture, so there is no separate ballast to mount. Its Full-Spectrum Fusion spectrum is balanced for full-cycle growing, and Treegers also position it as an optimal choice for propagation, clones, mothers and vegetative growth, so one fixture can stay in place from the first cuttings through to flowering. The GL is one light built in two sizes: the GL300W runs four bars and the GL420W runs six, spreading the same spectrum and efficacy over a larger footprint.
The multi-linear layout spaces the bars across the frame, and each bar spreads its light at a 120 degree angle, so the canopy is lit from several points rather than from one central source. That overlap helps even out intensity between the middle of the canopy and its edges. Cooling is entirely passive: heat leaves through the fixture itself, with no fans to clog, clean or fail. Treegers quote a diode efficacy of up to 4.2 μmol/J and a whole-fixture efficacy of 2.8 μmol/J. A gap between the two is normal, because the fixture figure includes what is lost converting mains power in the driver. That makes it the more honest guide to how much light each watt actually delivers. On the GL420W, Full-Spectrum Fusion is built from 4000K and 5000K white diodes with 660 nm deep red, a wavelength close to the absorption peak of chlorophyll that adds efficient red to a broad white base.
Treegers rate the GL420W for a larger area than the GL300W, while the PPFD maps measured for each model show the four-bar GL300W spreading its light more evenly across its own recommended area. Both models are dimmable through the Treegers Precise T Dimmer, which is not part of the box contents. Starting seedlings and fresh cuttings at a low dimmer setting, then raising the output as the plants establish, keeps young growth from being pushed harder than it can use. It also lets the same light carry the crop through to flowering without being swapped out.
Magnetic LED bars that simply click in and out of the frame!
Fan-Free Cooling
The fixture cools entirely through passive heat dissipation
Dimmable Light Output
Turn output down for seedlings, up for flowering
Full-Cycle Spectrum
One light from clones and mothers through to flowering
Back-Order
Back-OrderCurrently out of stock: back-order now to reserve yours from the next shipment.Estimated dispatch around 26 November.
Sealed to IP66 against total dust ingress and high-pressure water jets
LED bars rated for over 60,000 hours
Runs from Treegers Growcast or any universal controller
Covered by a 3-year Treegers warranty
Ships with a 1.8 m (5.9 ft) power cable, two stainless steel cable hangers and a user guide
Directions for Use
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Application
Set the hanging height by light level rather than a fixed distance. Check the reading at the top of the canopy with a quantum PAR meter such as the Treegers Quantum PAR Meter, and raise or lower the fixture until the reading suits the plants' stage of growth.
Safety
Switch off and disconnect the fixture from mains power before attaching or detaching LED bars, adjusting the hangers or moving the light.
Technical Specifications
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Spectrum Full-Spectrum Fusion
Fixture Efficacy 2.8 μmol/J
Diode Efficacy Up to 4.2 μmol/J
Light Distribution 120 degrees
Thermal Management Passive cooling
Ingress Protection IP66
LED Bar Lifetime Over 60,000 hours
Power Cable Length 1.8 m (5.9 ft)
Input Voltage 120-277V AC
Certifications SAA
Dimming 0-100% in 10% steps (with Treegers Precise T Dimmer, 0-10V)
External Control Treegers Growcast or any universal controller
Warranty 3 Years
GL300W
Product Model TGL0001
UPC Code 9309001188030
Power Consumption 300 W ±5%
Light Output (PPF) 825 μmol/s
LED Bars 4
Coverage Area 0.8 x 0.8 m (2.6 x 2.6 ft) up to 1.0 x 1.0 m (3.3 x 3.3 ft)
Canopy Average PPFD 640.31 μmol/s/m² over 0.8 x 0.8 m (2.6 x 2.6 ft) at 40 cm (15.7 in)
Uniformity Ratio 0.62
Fixture Dimensions 600 x 700 x 41 mm (23.6 x 27.6 x 1.6 in)
Fixture Weight 4.2 kg (9.3 lb)
Input Frequency 50/60 Hz
GL420W
Product Model TGL0002
UPC Code 9309001188047
Power Consumption 420 W ±5%
Light Output (PPF) 1155 μmol/s
LED Bars 6
Diodes 4000K, 5000K and 660 nm
Coverage Area 1.0 x 1.0 m (3.3 x 3.3 ft) up to 1.2 x 1.2 m (3.9 x 3.9 ft)
Canopy Average PPFD 690.17 μmol/s/m² over 1.0 x 1.0 m (3.3 x 3.3 ft) at 40 cm (15.7 in)
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We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
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Directions for Use
Technical Specifications
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