This looks great. Its so good to DIY for your pets and its genrally cheaper and whats left over can be reused like paint etc. I wana do something like that for my gecko :D
I use filtered water with reptile water drops just to up calcium level and purify. The water where I live is very clean I like in the UK but i dont drink tap water so neither should Romeo :)
I use a uth heat mat. I am waiting for the exo-terro heat glo red lamp to arrive because my room is pretty airy and air temps can get a little lower than id like. I am also waiting on my thermostat that will regulate the temps.