my mom and sister have a 55g that previously had 4 common goldfish and a common pleco.. they never did water changes and wanted to know why they use to lay in the corner all the time.. I tried to tell them: the tanks over stocked, not enough filtration, the water is killing them because the waste that they never clean up... their rebuttal : but the waters clear and they obviously fit in the tank, look he just turned around. they think PWC
do more harm that good .. doesn't even make sense lol
finally got them to rehome the 7inch fish to a LSF.
now they have 4fancies and they contracted ich from non QT of new fish. I told them you need to keep the lights off and gravel vacuum every day, I went back few days later and they freaked out on me because the fish are in worse health.. I asked if they did anything I said, they said " well no, because that stuff won't help"
so now its my responsibility to drive 1.5 hours round trip to care for her tank and do PWC
. but I do it cause I feel bad for the fish