Got up this morning and looking over the tank before I go back to work for the first time since Christmas break. Water level looked a little low, so I hit "Feed C" on the Apex to add a gallon of RO/DI. Food was empty so I topped it off with some liquid mysis, arctipods and fish eggs. Conductivity and pH looked fine. Temp was at 73.5F. Grab lunch, pat the kids on the head...WAIT THE WHAT?!?! I had removed my heaters a few weeks ago to give them a vinegar bath and clean them. When I put them back, I never plugged them back in. A quick review on the Apex shows temp had dropped below 76F on Dec 31st and dropped about 1F a day since. I only plugged in one 75W heater so I can slowly bring that temp back up. I am now at 74F. The first heater is programed to maintain 76F. The second one comes on at 75.8F. The third one with alarm comes on at 75.6F. The alarm was manually turned off during maintenance and I never turned it back to auto. Time to add some logic in there as well. Stay warm my friends.