If you lift up part of the uth after removing two pieces of the foil tape you should be able to successfully place the probe underneath the uth. There you would get better control of your temps. You can then retape those sides with new foil tape. For the record the better uth is the ultra therm type. The zoo med uth has a tendency to have a higher wattage and run hotter. Also, try not to place tape over the probe.sensor bc it will give you a inaccurate temp reading.
Stay in peace and not pieces.
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