If you have a spare bedroom, why are you confining your grow to the closet?

Your problem right now is that you have to get the heat from that lamp out of the closet and (probably) out of that room. If you built a poly-film enclosure over by the window (or maybe even with the window inside the enclosure) you could solve your ventilation problems a lot easier.

If you absolutely must stay in the closet, take a look over in the FAQ section at the cool tube DIYs, then do a search on CanCom for verticle grows and see if a verticle cool tube grow is something that strikes your fancy. I have 400 watt cool tubes and they are actually cooler than a cfl, so the plants can grow right up to the light no problem.

If your ballast is in the closet, move it outside.

Good luck!!!

PC :thumbsup:
PharmaCan Reviewed by PharmaCan on . Hot! So I just purchased a 400 watt HPS setup today, and I got it up and running. I have to say that I am pretty blown away at the difference in power from what I was using (4-26 watt CFL's). I nearly get blind from looking at my plant! Unfortunately, my temps have risen about 8 degrees also. Now my closet is 93 degrees, and I need a way to cool it! Rating: 5