we have 4 300w led lights.. Can we put them closer to the plants because they produce barely any heat? And how close? We will take in to consideration the fact that they need to be high enough to cover all the plants but if I had one plant.. How close could you put that light?
Though they do not produce heat, they do produce light and PARs, and lots of them. They will still "burn" your plants. I kept my 120 W LEDs about 10" from my tops.
