Senseimilla
Well-Known Member
I had a little situation this morning. It got cold overnight and I went and turned the heater on, not thinking about my enclosed grow room that gets the majority of the hot/cold air... it was only closed with the heat on for a little over half an hour after lights up before I woke up and realized 'hey, i better shut the heat off and open that door'.... well there was a lot of leaf cupping and twisting from the heat.... but most everything directly under an LED got bleached/toasted. I guess if anything this proves that the LED really is putting out a shit load of energy for the plant to process compared to HPS. They could not handle the lighting at high room temps.My lesson - #1: watch that heat like a mofo. I've not had issues in the 85-90 range... but over 90, you're gonna kill your plants under LEDs much worse than HPS if the lights are close. I'm guessing it probably got into the upper 90s or around 100, and the air blowing in was probably over 100 (even though a/c was only set to 72) -- lesson #2 -- add extra co2