Hi guys, just after some suggestions to cool a fairly small space. I have set up a small op in a wardrobe, measuring 23" x 16" x 44" with 4 plants and a 125W flourescent bulb (not the greatest choice I know, but I didn't pay for it!). I am using PC fans to cool the space, I have 2 slot fans at pot height, 1 big one, three smaller fans aimed at the plants and one very powerful fan pointing at the bulb. At the moment only the two slot fans are venting out, but they are apparently much more efficient than the standard fans. There are holes higher up but they are not being used at the moment as the light is still quite low. I have worked out the volume of the space and I am fairly certain that the two fans recyle the required amount of air, and once the light is higher two more fans will vent.

The girls have been growing for just under two weeks and are going well, but the temperature with the light on is over 35 Celcius. Can anyone give any suggestions as to how to cool the area more effectively during the day? Currently we have to open the door once a day to cool the place down. Obviously more fans would be best, but any more and there won't be any space for plants! Would a more strategic placement of the holes help?

There's only one way to really do it, Inlet fan as low as possible, exhaust fan as high as possible, the hot air needs to vent some where it wont just get sucked back in. Like its pointless to have a grow box in a sealed closet, and have a fan on the bottom and top of the box, the closet will eventually get hot and you'll be blowing hot air back into the box. Fans that just blow air around in the room dont do anything but push hot air. U need to get the hot air out, and get the cool air in however possible, its your space.

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Smoke WEEED

Thanks, that makes sense! I should have thought of that from the off, it's simple GCSE physics! I will try as you suggest tomorrow, they are asleep at the moment. Thanks for your help