Quote Originally Posted by The Serpent Merchant View Post
No, the probe under the tub will consistently be a few degrees above the actual inside of the tub, but this is where your thermoSTAT probe should be for safety reasons.

The 412L has an accuracy of +/- 4 degrees F

Right now I have the thermostat probe taped to the heat cable but it's not on the part under the tub.

So what you're saying is, put the thermostat probe between the two head cables under the tub?