Yep, I have. I have a medium Exo-Terra tank (it was the rainforest kit) with a sun-glo (It was left over and I didn't want to spend too much on a new bulb when the other one kept the tank at night temps) and a bulb, and the zoo med heater. So almost the same as your other set up for your "Big guy"Although I do keep my heater at the bottom of the tank, like the directions recommended (or I thought they did), would the tank be warmer if I moved it to the side of the tank like it seems most people do...? Thanks so much for all your advice/help btw!