The hydrofarm thermostat is fine for one snake with a heat mat. I have my corn and my BP on rheostats- just table top lamp dimmers from the hardware store. I have one set lower at 82-87ish, which keeps the BP's cool side and the corns's warm side appropriately controlled and then Atlas's hot side sits at about 88-93ish. I've got more temperature fluctuation than I would like, but everyone eats like it is going out of style and I haven't had any RI scares or any other signs that something was wrong.