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So I made a thread yesterday about my water being at a constant 82 degrees despite the fact that I didn't have a heater hooked up to it for almost 24 hours. Today I did a 75% water change with cooler water (about 68 degrees out of my tap) and still haven't plugged in a heater. Since the water change the temp has continued to rise and as I write this it's at around 78-79 degrees again. I used my laser thermometer on my fluval 406 filter and it's reading about 84 degrees where the propeller is. I just set this filter up on Wednesday. Did I put it together wrong? Seems awfully warm for just filtering room temperature water. The filter is located in a cabinet underneath my tank and the room temperature is around 73-78 degrees constantly.