I was wondering if anyone has dealt with this problem before. My display on my Finnex heater show the tank at 79 degrees. The display on the Apex shows 78.1 degrees. I noticed since the weather is already warm in CA that the temperature is fluctuating almost 2 degrees in a 24 hour period. What should I set as the on and off temperature on the Apex to keep things from fluctuating? Any suggestions would be appreciated.
... Then I realized the heater wasn't shutting off when it was supposed to, apparently it was bad (hope that's not your problem) it was brand new, but once I replaced it I haven't had an issue since.

