In the new viv stack I'm building the lowest tank is going to be for the ball python I'm getting my wife soon, is the temperature gradient different enough in this case that I should have a thermostat to regulate the ball tank alone and then have two thermostats for the remaining tanks which will house corns? I know balls have higher temps but part of their gradient falls within corn temp gradients as well. I'm just wanting to know so I have enough thermostats for the set up.