I don't have any microscope yet. By the way, do you think 18%HTC is high enough or not.
davemedinis Reviewed by davemedinis on . My progressing journal with LED grow lights LED grow light was invented four years ago,over the several years,it has been being used by minority gardeners.But there are still lots of users suspicious about the LED grow lights, I am one of those ones LOL! But since my tent was only 4x4x6 ft, and my old HPS and MH lights always emitted too much heat, initially I had a 220CFM fan on the exhaust to a carbon scrubber, but the temps were still too high. Of course, I didn't realize that I got a booster fan! So I got a 440CFM 6", which is much Rating: 5