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I can't imagine running 500w of cobs in a 2x4. Do your plants look light stressed? Temps? That must generate a ton of heat.

Great build! I'm thinking of something like this for my perpetual full cycle tent. What would you think about mixing in a few 4000K modules to round out the spectrum a bit? Maybe I should just go full 3500K instead. Hmmm

Any experience running these on a 24 hours schedule? Concerned it might be a bit much UV.

Temps are ok but mounting the drivers outside the tent is a must imo. Once I get my last heatsink I'll compare temps running 2 vs 4 boards. So far the plants seem very happy with them. Originally I was going to build a frame but now I think I'm going to keep them individual. Its nice to be able...

Got my 4 boards but it seems one of them shipped with the wrong heatsink. I've reached out to HLG to get it replaced. The other three are setup and looking bright. I started with two initially and they ran pretty hot for my tent @ 125w. Hestsink too hot too touch. Ive added the third light and...

Thanks for the reply. I did read the full thread but everyone seems to be raising the lights high and driving them hard. With a 5ft tent I was a little worried Id get bad coverage and/or light burn when the canopy is like 12" away. Thought multiple lights driven softer may help. Anyways, I went...

Picked up four of these for my 2x4 tent. Super excited to get them running. Thinking about getting two more for better coverage since my tent is only 5 feet tall. Should I go with: 4 qb96 on two HLG-240H-c2100b Or 6 qb96 on two HLG-240H-c1400b Im leaning toward the 1400 driver since it will...