70 degrees is a little chilly for a BP. Try getting a cheap electric fan heater on clearance for like $5-10 from Rite-Aid or Walmart or maybe even hit a few flea markets. You might also want to try insulating the bottom of your tank and maybe even the back and sides too. This will help to create a more even temperature gradient and will help eliminate hot / cold spots. Aluminum foil or a trip to Home Depot or Lowes might help with this task.
From what I have gathered, 92 deg belly heat hot side, 80-82 deg belly heat cold side, 85 deg ambient and 50 -60% humidity are the #'s that you want to try to attain. Good luck and don't forget to be creative![]()