when i got my corn i was told by the pet shop to put the heat mat on the back of the viv i found this weird but hav tired it for three days and still not convinced i cant get the temp to stay regular through the day i also hav a 60 watt bulb which is in the day as the heat mat only kicks in when the temp goes below 70 and i have the thermostat set to 85 so when it reaches that it goes off. im at college tomorrow it will be the frist time im out all day so wont to be able to keep an eye on the temp what do you suggest i do,if i leave the light on it goes above 90 at least it will be controlled. i really dnt know what to do please help!!!