Quote Originally Posted by Sarin View Post
I have my Herpstat set to 89 degrees. The Flexwatt reads 95ish with a temp gun. The hot spot in the tubs read 89-90.

It's weird. I never figured out why it does that, but I fiddled with it until it worked.
You cannot use a temp gun directly on flexwatt because the temp gun is based off a laser and the surface of the flexwatt is reflective.

Use a piece of newspaper over the flexwatt or a piece of tape that is not reflective and point your gun at that.