@kitedemon, I appreciate the help. Now I'm not sure what to do though ... I can't afford to spend much over $50 for a temperature controller, so what would you recommend that I get? I was planning on the Hydrofarm, but now I'm not too sure after your post. I don't care if it's digital or pretty or whatever else, I just want it to work good. I'm almost reluctant to get a ball now ... I don't want to hurt it or neglect it, but I just can't swing $100+ on a thermostat right now. Would something like this be good? - http://www.petco.com/product/108340/...ure+controller