If you have only two tanks, I'd recommend getting two thermostats. I have little experience with snakes, but I've talked to a fellow engineer about this issue in a more general sense. If everything is the same in both cages, then you can regulate one and assume that the other will follow. The question is how certain are you that both cages will always be under the same conditions. Do you have them at the same level in your room, the same distance from doors and windows, with the same amount of sunlight from windows falling on them, with the exact same amount of substrate in each tank, the same humidity in each tank? If all of these things aren't the same, then what one tank sees could be different from what the other tank sees. In addition, if you have separate undertank heaters for each cage, one thermostat will not shut off the heat in the cage without the probe if the heat pad in that cage fails in a way that causes runaway temperatures. One thermostat is better than no thermostats, and one good one might even be better than two bad ones. However, two good ones would be safer.


Bill
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It's not how many snakes you have. It's how happy and healthy you can keep them.

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