The problem with these on an RHP are they are not proportional and have a 2° delta. Let's say you have it set to 88°, it will turn off when it reads 88°. It will then allow it to cool down to 86°. At this point it will crank the RHP full power until it reaches 88° again (although your temp will probably rise above that since the RHP is still hot and emitting heat).

The proportional system are best because they gradually add heat and are capable of keeping a tighter tolerance on your temp.

Will it work? It will work better than what you have now. It's only $30. Doesn't hurt to try it. They make a nice backup in any case. And yes, there are other options besides Herpstat. There's Helix controls, Vivarium electronics, ranco. I've only used Herpstat so can't speak as to the cost/quality of the others.


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