Micro Temp Controller Heater Controller (Mfg# AZ12037)

I bought one of these to control two heaters in my 55 gal. discus tank. At higher temps. it is inaccurate. This is only a minor problem after you recognize what it needs to be set at to get what you want. Another problem I had was that the instructions are pretty much useless. The temp. adjustment (through a small hole in the back) is difficult to set accurately. The setting display presents temperatures in degrees Fahrenheit without any decimals as it says in the manual. The readout normally displays degrees Celsius.

The really serious problem occurred this week. We had a brief power outage. When the electricity came back it had reset to a default setting of 78 degrees (too cold for discus). By the time I checked it in the morning, the temp. had fallen from 87 degrees to around 77 degrees. The fish were stressed, but fortunately looked better after a couple of days.

The idea of having a common controller for multiple heaters is an excellent one. I just wish this one worked better.

Update: It quit working completely after about a month. I returned it and got my money back.