There are 3 choices
1. a dimmer from a hardware store
2. a rheostat: http://www.petmountain.com/product/r...-rheostat.html
3. a thermostat: there are many choices to choose from but if you have a limited budget a cheap choice is http://www.petmountain.com/product/r...ermometer.html but its best for only 1 UTH (I have found they have a hard time keeping 2 separate UTH's at similar temps)
I'll get a pic of my guy's set up. It's really simple but I plan on getting some decor for him :]
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