No worries! Probe placement will kinda depend on room temps and cage size. I’d try cool side set at 78-80* and monitor what the hot spot gets to. I’d deck the cage out how to plan to have it set up and then fidget with temps. The thermal mass of whatever is under the panel will affect how the rest of the cage is heated. I do two T8s with probes directly under the panel set to 84-85* and I get perfect 90-80* gradients. My t25 is set cool side to 77* and it makes an 88* hot spot. That cage is currently just ambient temp of 78-80* and belly heat at 90*. For some reason when the room temp is 72-75* the cage will be a few degrees warmer. The heat tape sure isn’t doing that.
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