I am new to ball pythons and just got my first, Nagini !!! However i am struggling to heat my tank above 80 degrees. The tank is 30 inches long, 16 tall and 12 wide. I have a thermometer about 4 inches above the aspen bedding and I can only get it up to 80 degrees (on the hot side!), sometimes 81. I believe its because my tank is taller than most. I currently have two bulbs on the hot side of the tank, one 100 watt and one 150 watt (in a double bulb heat lamp). I know this may seem like a lot, but by taking one out the thermometer drops to around 75 (so naturally i worry). I have a heat pad under one shelter on the cool side. So basically i have two questions, is it ok that i have those two bulbs? and is there anything else i can do to bump up the tank a couple degrees? I wouldn't worry but he doesn't come out during the day unless i take him out, so she doesn't bask up near the lamps at all.

I'd appreciate any input!

-Fletch