Hey chemist. I read the whole "chemist77 315 watt CDL grow" thread. Im interested in the 315 watt CDL from boulderlamp.com. That thread is two years old now and QB are supposedly better than cobs, i dont know maybe i should ask ttystikk. I havent made enough posts yet. I want to buy a 300w cdl or a qb from HLG but I need advice first. Anyway I hope I am blessed with a moment of your time!LOL