My room temps range from 66 to 69 during the winter. I was recently told that I shouldn't keep snakes in that room because of the risk of RI. Well, five years later using tanks, racks and stand alone tubs, all is well. You just need to think it through and find your best setup.

I am building a 41 quart rack and am still deciding whether to use 4" or 11" flexwatt for belly heat. This will be the greatest distance from front to back of any rack I have so I may have to use a heat source in front as well as back. The smaller tubs get residual heat in front from the 4" in the back. I put a towel over the front of the rack which keeps some of the heat in and I have a solid back, not pegboard.

It can work. I would try different setups without the snakes first. Good luck.