thanks for all the help... i got a UTH on each side now. cool at 82-82.6, hot at 92-92.6. it seems to flutuate between these during the day. I also have a ceramic heat emitter that is keeping the ambient at 78.5. humidity is at 57. all heating devices are on rehostats. this seem like good numbers? I couldn't for the life of me find a thermostat at any of the pet shops in my area so in the future I'll probably get a few from the internet... but again... thanks