I’ve had my spider for years without issues. If you’d like feel free to message me if you want to avoid people chiming in with bs. Although I think everyone here follows the predominant care sheets so... I’d just go off that. Idk if you’ve changed tank size but a 20 gallon is too small. I’ve noticed my bp will become restless if my apartment gets too warm. It could be that your UTH is heating the entire enclosure to the hot spot temp because it’s too small. Just an idea
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