Hey folks, Yesterday I installed an Eheim Classic 600 Cannister filter on my tank, removed a few bits of decor and added some wood. Tank looks fantastic and the shrimp are loving it. But for some reason - and I cannot figure out why - my temperature has increased by 2 degrees C. My heater is set to 24 like it was before. My thermometer is on the opposite end of the tank to the heater, so I know the reading isn't being skewed by that. Doesone have any idea what could have caused this? Could my thermometer be broken?