I have my boa in a glass tank. I have foam poster board around three sides and on the top, a UTH (on a thermostat, of course), and a heat lamp on a rheostat, and have no problems maintaining temps in the tank. Spotticus is 5 years old now and I've never had any problems with him (except when he strikes at his mouse and misses and gets my hand instead, lol.![]()