thanx prez..i figured that, but needed to be reassured. i got another question..is it ok for my grow tent to get into the mid 80s temp wise during their sleep? id hate to have to run a/c during that time, all the electricity im pumping into this room is gonna cost me a fortune, i just know it. So if I can get away not running the a/c at least some of the time, it'll help~in fact, if it can be in the mid 80s just during those 4 hours, i can reasonably control the temps the rest of the time-the girls sleep during the hottest part of the day, i did that on purpose. haha.