So I have 2 eheim jager one of them never turns on and one is very often on. I’m starting to get concerned because I just shut them off and adjusted the one to a lower temp hoping it would have less on cycles and give the other a chance to turn on at all. This was not the case. I plugged them back in and the hyperactive one is still on despite lowering its temperature and the other one is still dead. Any suggestions? I know that the temperatures aren’t very accurate so I have 2 thermometers to keep an eye on things. It’s a 75 gallon I have the heaters at a 45° angle.