yeh i exactly see wot u r saying, and plus great news which i am reli happy about, new digital lights have come out on the market, they last over 10X longer than normal bulbs possibily longer, they generate less heat but like 30-60% more lumens and there not very expensive (£135 for 600w w.ballist n reflector) so that will b another possitive thing, bcoz it generates fuck all heat, there will b no need 2 put a squirrel fan in the grow room =)