Quote Originally Posted by el8ch View Post
Stick your thermostat probe to the underside of your UTH on the outside of the tank, no need to peel off your UTH - just use some "tinfoil' tape and adhere the probe to the UTH. The digital thermometer will go on the inside of the tank!

Make sure your husbandry and everything are in check, read the Caresheet
Enjoy! =)
To the OP you should NEVER use tinfoil (aluminum) tape on a thermostat probe. aluminum tape will mess up the probes readings by acting as a heat sink. Hot glue is a much better choice. just don't put glue on the probe itself.