Wow, 25 plants in a 4X4? I used to do 9 in my 5X5 and it was crowded.
I'm beginning to think LED is best suited for enclosed spaces with very reflective surfaces, like tents. Especially with quantum boards, since you can't really put a reflector on them like COBS.
Or can you?
Hmm...
Has anyone converted an old adjust-a-wing reflector to LED using a couple of quantum boards? Just mount the driver on top.
I have been reading a lot of stuff the cob company guys are posting and I think the results require a lot of cobs. Like one every square foot run at very high efficiency seems to be best.
Someone please correct me if there is a better way.
Same reason I like 2 600's instead of 1 1000. 3 400's might even work better. More light from more sources from more angles.
I still would keep my plants short inside using overhead lighting. I try to maximize the light I use not stretch its capabilities.
I was just going to sandwich in the 315 but I keep thinking I want a new toy.