Recently I decided to try my hand at growing, and here is my finished bucket! I'm using four 23w CFL bulbs for the light-top. Inside of the bucket is Chrome paint for extra reflection. I have two 80mm CPU fans going pretty hard and they move a lot of air. It stays nice and warm in there, the hottest it's ever gotten is 81 degrees (about 27°C). Thanks to the community for the help!