Large LED Grow Lights

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

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.