Cobalt Aquatics Accu-Therm Heater 25W (mfg# 31010)
This was one of the few places that carries Cobalt heaters. It stays at the temp it's set. Have had no problems with it. High quality product.
April 11, 2014
Extremely happy with the service I received, very quick delivery. Product works as advertised. Absolutely nothing bad I can think of
November 21, 2013
So easy to set and use.
This heater was easy to install and is regulating my 55 gal.tank perfectly.
November 4, 2013
I have a collection of heaters. They either dont keep a consistent temp or the white design starts to peel off or it turns out not to be submersible after all. And a dozen other problems. But this heater by Cobalt is great. It fits in my sump filter, keeps the right temperature and theres a dial with the actual temp you want to keep so no adjusting up and down constantly. Great buy !!
October 25, 2013