Hey everyone im moving my female spider from a twenty gal long into a forty gal breeder and my question is,,,should i use a 100 or 150 watt ceramic heater for ambient air heating? I have cardboard affixed to all three sides on the outside of the glass, and will be using a UTH with thermostat,i have an accurite thermometer/hygrometer on its way as well,,,my room probably gets down to around 60 to 65 degrees at night,,,,any thoughts? Thanx Chaddeus