We got an undertank heater for our kids this spring after brumation and I have to say that it was the best investment we have made (other than the $20 55 gal aquarium). The male is much perkier and is eating much better than last year with just a heat emitter bulb. As a matter of fact, he is eating better than he ever has. The Mrs. is eating even more than her usual gluttony self, but she is gravid, so i can't hold it against her. Both seem much more active and alert since the heaters installation. I think that the emitter was too high from the floor of the tank to be effective.

Scott E.