Can I use a Rheostat to maintain the desired temp in the enclosure or do I have to use a thermostat? I don't know what the difference is between the two. It sounds like they are pretty much the same thing except the rheostat is less expensive. Can anyone help me out with this? I have everything set up for a baby GTP (the rubbermaid tub enclosure from Greg Maxwell's site)and that's the last thing I need. Thanks a million.


