sizzlinbetta;3380124; said:i would rather do 80% 1 time than a bunch of 25% and if necess i'd just use tap over letting them be in 96 degree water i had to do that recently as my heater went nuts and fried a tank...
the reason you do frequent 25% water changes instead of one big 80% water change is so you don't shock your fish by changing the water temp too much too fast . . .
also, since the water temp is going to climb right back up again, doing multiple smaller water changes will be easier to manage over a longer period of time
frozen bottles of water will also be a big help