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@Hbomb420, that's nice, I have exactly the same temps with a 315w CMH. Those lamps are supposed to be cooler but with mine the ballast is attached to the reflector, which also can't be air cooled. I guess that adds up. I'm looking forward to also trying HPS some day
@BillMonroe,thanks mate!my temps have gotten up to 29%c on a hot day but generally they stay around 26c that’s in a 90x90 tent with a 5inch in-line exhaust fan