KonvictKeeper
Aquarium Advice FINatic
So I went on a shopping trip today and picked up some things for the new 55g. one of which was a heater. It is an Aqueon Pro 250w. I went a few sizes up because it gets pretty cold in the fish "cave". When I got home, I went in the cave and the tank was about 66F. I took some water out and put warmer water in, bringing the temp up to around 74F. I figured that would make it easier on the heater. I put it in, set it in between 76 and 80F, and left. I came a few hours later and the tank was dead on at 78F. I looked at the heater and it was still running. I came back an hour later and it was still running, but the temp was still at 78F. What is with that?