Large LED Grow Lights
- Sold out
- -15%
- -44%
MAXIBRIGHT
Maxibright Daylight 660W LED Grow Light | 2.3 / 2.8 µmol | Full SpectrumFrom £274.00
£490.00 - -35%
- -14%
- -11%
TELOS
Telos Dynamic LED Grow Light | Manual Dimming or Integrated Mesh Wireless Control UnitFrom £446.00
£499.00 - -20%
- -9%
ADJUSTA-WATT
Adjusta‑Watt Intec 720W LED Grow Light – Full-Spectrum, Integrated Driver, 1944 PPF, Dimmable£145.00
£159.00 - Sold out
- -43%
- -45%
- -29%
- -36%
ThinkGrow
ThinkGrow Model-H Plus 720W LED Grow Light 4ft & 5ft | Commercial Horticulture LEDsFrom £954.00
£1,500.00 - -30%
- Sold out
- -27%
- -30%
- -20%
DUTCH LIGHTING INNOVATIONS
DLI Diode Series Multilayer 600 FS DC - 630w LED Grow Light£719.10
£899.00
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Large LED grow lights covers fixtures from roughly 600W upward – the output you need for a 1.5m tent, a 2.4m tent, or a room running multiple fixtures side by side.
Matching output to space
| Space | LED wattage | Fixtures |
|---|---|---|
| 120 x 120cm | 450-660W | 1 |
| 150 x 150cm | 650-800W | 1 |
| 240 x 120cm | 2 x 450-600W | 2 |
| 240 x 240cm | 4 x 600W or equivalent | 4 |
| 300 x 300cm | 6+ fixtures | 6+ |
See 100-200cm tents and 201-300cm tents for the matching footprints.
What separates a good large fixture
- Bar format over panel. Multiple bars spread light more evenly across a big footprint than a single central panel, which is bright in the middle and dim at the edges.
- Efficacy. At this wattage the difference between 2.4 and 2.9 µmol/J is a meaningful sum on the electricity bill over a year.
- Dimming and daisy-chaining. Running four fixtures from one controller, dimmed together, is far better than four independent lights at fixed output.
- Driver placement. A remote driver moves a chunk of the heat outside the tent, which reduces what your extraction has to handle.
Heat is the real constraint
LED runs cooler than HPS but 800W is still 800W of heat in a sealed box. Size your extraction for the total lighting load, not for the tent size alone – this is the most common reason a good fixture underperforms.
Related
See all LED grow lights, small LED fixtures for compact tents, and hangers and rope ratchets.
Why buy from The Hydro Bros?
We are a hydroponics shop in Croydon and we quote real wattage, real coverage and real efficacy. Tell us the footprint and we will spec the lighting and the extraction together. Discreet UK and European delivery, and excellent customer reviews on Trustpilot.
