I've never heard of a problem with the inkbirds. But the reason the heater is in the foil pan is because I get floods kinda regularly. I need to switch that to a glass pan actuallyGreat idea in that space! Im in a 4x4 bed, so nothin goin underneath! I had multiple problems with 3 different ink bird models. Each one was replaced, but all messed up again eventually. Mine says pretty consistent with just the setting on the heater
Have you thought about rigging the heater to be off the floor? Maybe in case of too much water?