So Mycroft is going to shed in the next 1-3 days, and then I'm going to move him over into the new tank. I am noticing a problem though, that I need some help with.

first of all, I don't know if its the style UTH I have, but the temperature of the heat mat doesn't seem to go above about 85F. I've see that the warm spot should be around 90F...will those 5 degrees make a difference??

also, because of the temperate nature of our summer this year (never happened like this before) the temperature of the house has been dropping in the evening (low in the tank last night was 65F). That was with damp paper towels over the top and the UTH on. In the winter our house will drop to 50-60 degrees at night (my folks are into energy saving, which I totally agree with).

Am I correct in assuming that I should probably get a heat lamp to supplement the ambient heat?? I so, what type should I get?? I don't trust the label for how much it will heat the tank, and the folks at the pet shop where I get my equipment were the ones that told me you didn't need a thermostat with a he's mat....

Thanks for he continued help (I feel kinda dumb to keep asking these questions). I just really want to make sure that my 20 gallon tank is the best setup possible.