cmor1701d
Aquarium Advice Addict
When I replaced one of my heaters a few months back the temp readout on that was off a few degrees from the Big Digital so I checked both against mercury thermometers including a lab grade mercury thermometer. Both mercury thermometers and the Big Digital gave the same temperature.
The other day I noticed that my tank temp appeared to have dropped by 5 degrees. My Big Digital Temperature Alert was reading 75 when it normally reads at 79-80.
I nudged the controller on both heaters to make them turn on and felt both of the titanium heaters to make sure they were getting hot. They were.
I then put my cheap mercury thermometer in the tank and it was reading a normal 80 degrees. Hmmm... One of them is wrong, so I double checked with my lab grade thermometer and it too is reading 81 degrees (the tank heated up 1 degree due my nudging the heaters up a notch).
I took the Big Digital Temperature Alert out, cleaned the temperature probe of coraline algae, and then tested it against both mercury thermometers. It consistently read 5 degrees lower.
After 10 months of reliable service this digital unit is now a consistent 5 degrees off. As long as I'm aware of that I'm ok with it. If I had not checked it against a mercury thermometer my tank would now be at 85 degrees
I sent an email to Pentair Aquatics and I'm now waiting for a response.
The other day I noticed that my tank temp appeared to have dropped by 5 degrees. My Big Digital Temperature Alert was reading 75 when it normally reads at 79-80.
I nudged the controller on both heaters to make them turn on and felt both of the titanium heaters to make sure they were getting hot. They were.
I then put my cheap mercury thermometer in the tank and it was reading a normal 80 degrees. Hmmm... One of them is wrong, so I double checked with my lab grade thermometer and it too is reading 81 degrees (the tank heated up 1 degree due my nudging the heaters up a notch).
I took the Big Digital Temperature Alert out, cleaned the temperature probe of coraline algae, and then tested it against both mercury thermometers. It consistently read 5 degrees lower.
After 10 months of reliable service this digital unit is now a consistent 5 degrees off. As long as I'm aware of that I'm ok with it. If I had not checked it against a mercury thermometer my tank would now be at 85 degrees
I sent an email to Pentair Aquatics and I'm now waiting for a response.
