They're Animal plastics economy racks, I tried a different thermostat same thing. Its belly heat. I don't use flexwatt anymore even though I still have a roll left over from what they sent me when it was under warranty so I haven't moved the probe aside from its in a different tub now

Thanks, and it didnt help they were some of my favorites and one of them I spent close to $300 to get over a RI infection previously