Hi! Been a little bit since I've been here. Nice to be back

So, recently my fiance and I bought a house! It's lovely and I am excited to expand my reptile collection. We've lived here a few weeks and so we are getting the feel of the house down. I house Argus - my male Bp - in a 40 gallon Exo Terra tank, the kind with the front-opening doors. In our old apartment, which was easy and cheap to heat, he had a ceramic heating bulb in a hood over his tank. He also has a heat mat hooked up to a thermostat keeping his hot spot at 90. This kept his ambient temps at 80.

At the new house, it's larger and a bit older and harder to heat. We put the tank in the basement where my gaming den will be, but I pretty quickly realized it's too cold for my current setup (he was down there all of one night). Ambient temps in the basement are 60 degrees right now because it shares a wall with the garage (and it's winter in MN - it's been 20 below outside overnight). I plan to get a space heater for when I'm using the basement but we won't heat it full time any higher than whatever the ambient temp is.

It was actually my fiance who realized it was far too cold for him. His thermostat went out, so I unplugged the mat and covered the tank with foil and blankets to insulate the heat my ceramic bulb was putting out. The next morning he texted me at work to tell me the tank was only 62 degrees, so he moved it upstairs (by himself!) and let Argus hang out in his shirt to warm up (what a great guy). Now, upstairs, his heat mat is all set up again so his hot spot is 90, but even with the ceramic bulb and the foil and insulation the ambient is only 72. The thermostat is kept at 69 in our house.

So. What do I do? A giant ceramic bulb with enough power to heat that tank 10 degrees will make it dry as a bone in there. Are there more efficient heating options, or am I stuck with ceramic bulbs and just get a bigger, better one? I feel like there has to be something better but there's so much "so-so" info I figured I'd ask right at the source.

Thanks much