I bought a brand new apex system about 6 weeks ago and installed according to instructions which state that the temperature probe is calibrated at the factory and should not require initial calibration upon start-up of a new probe. I didn’t think twice about it.
Installed a new Helio PTC heater last week and it was reading 2 degrees cooler. For some reason I convinced myself the helios was wrong and adjusted its calibration to match my apex. This weighed on my mind for a few nights so I finally broke down and bought a Traceable NIST certified thermometer to see what my actual water temp was. The apex was reading 2 degrees high!
So instead of running my tank at 78.2-78.8 F, it has been running at 76.2-76.8 F for the last 6 weeks! Fortunately everything in the tank still seems healthy.
Installed a new Helio PTC heater last week and it was reading 2 degrees cooler. For some reason I convinced myself the helios was wrong and adjusted its calibration to match my apex. This weighed on my mind for a few nights so I finally broke down and bought a Traceable NIST certified thermometer to see what my actual water temp was. The apex was reading 2 degrees high!
So instead of running my tank at 78.2-78.8 F, it has been running at 76.2-76.8 F for the last 6 weeks! Fortunately everything in the tank still seems healthy.