I have 6 snakes in reptile cages- very different from fish tanks. The rest of mine are in racks systems in tubs.
I will work to getting all of mine into reptile cages since the tubs do not allow enough room for the moving around that they do at night.
Reptile cages are cool in that they are designed to maximize heat and humidity and so don't have the issues that fish tanks have. Also, you can use flex watt, UTH or RHP's in them- I use RHP's because they are wonderful!!!!!