Whoops, don't know if my message erased or just sent halfway through,so here goes again: we're prospective first time snake owners who live offgrid, trying to figure out the least amount of electricity needed to keep a corn snake warm. I'm imagining a 20 gal aquarium setup for a single snake, and wondering if you know what wattage heat mat I should be getting, as they seem to come in quite a range? That way, I can estimate our battery amp hours need and determine whether this is feasible (I hope) or not (which is more likely.) Thanks! Twolunger suggested you might be able to help.