I'm fairly new to having fish and have a 90 gal
tank with 5 either commet or common goldfish (about 2-3 inches in length and 2 years old) and 2 snails.
I'm not sure how often I should be doing water changes, as the tank is bigger than there would usually be for goldfish fish that size from what I've heard.
We currently have a large filter set up on it and a oxygen thing that suits 60 gals (I figured that while the fish are smaller that maybe we could get away with a 60 gal
Does anyone have any opinions on how often I should be doing 25% water changes, and if I should be doing other cleaning things? And if the oxygen thing is probably good for now while the fish are not full sized?
We also had a pleco in it that died, which I figured was maybe because the water was room temp and not heated. Does anyone have any opinions on whether there is a catfish that would do well in this setup and whether we could get two rather than one? I got one since I worried that the pleco's would fight or be too big once both they and the goldfish were bigger.