i took the rheostat back since even on low setting it was to hot. i got a lamp dimmer from walmart which is actually working. keeping hit side between 88 and 91.8. which the breeder i got him from suggested it till the thermostat comes wednesday... then i took heat lamp that i had away and gota new that looks like a ceramic top and it is keeping cool side at 77.6 and 82.3. and humidity is staying between 56 and 64.