OK, so I apologize if this is answered in another thread - I couldn't find any that answered my exact question.
So I noticed my betta swimming pretty lopsided and being very lethargic (hiding in his cave). I assumed the worst and thought that he had a swim bladder problem for constipation or something. I turned off his filter to change his water and magically he started swimming normally. I'm now thinking his filter is just too strong.
I have the 2.5 gallon mini bow by aqueon. I don't mind doing water changes, but I'd feel much better having a filter in his tank. Do you have any suggestions for fixing the problem with too much current?
Are there any weaker filters that you have found that actually fit in the aqueon 2.5 aquarium decently?
Thanks for any suggestions!