My grow tent has a 400 watt hps with two normal house hold fans blwing in it
and the temp still went to 90
how can i bring it downnn some more?
just for clarity's sake: fan don't cool air directly, they merely move away the hot air.All that is happening is that the fans are cooling the air but then the air is been blown around the tent thus becomeing warm and stagnent.You need a good exaust fan one that will pull air from the grow room and push it outside the room pref into a carbon filter.If you have not got the money yet for a good one go to the local d.i.y centre and buy a couple of extractor fans that are used for bathrooms and kitchens these work realy well.But you will have to get hold of a more powerful one at some time.