I think it would have been fine if mine weren't defective, but since I'm going to return it anyways, I went with a Ranco. I did do my research, it just so happens the $30 dollar thermostat I bought was defective.

And I'm not going to use a CHE, I'm going to use 3" flexwatt wrapped on 3/4 of the sides of his tub near the bottom controlled on a thermostat.