fellow growers,
I have 3 auto's going all at 3 wks, just introduced the 400w hps, got them in 1.2x1.2m x2m high tent, also have a 4" extractor with carbon filter, and two desk fans, one on the bulb, one on the plants.
all seems a good setup but still getting temps up at 30c/84F, after an hour i...