My memorial day weekend started with a bang. Literally, the a.c. fan motor (maybe) broke. Even if we were willing to pay the arm and leg for holiday rates Monday would be the soonest ( coincidence a double time day?) Anyhow... I live in Texas and its already 90's time here and all my tanks are between 84 and 87°f. Mostly new world cichlids with 2 African tanks. I worry... unnecessarily? Ice cubes? Water changes?