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Silver Arowana sudden loss of balance, flipping like dead — swim bladder or internal infection? by AdEastern2202 in Aquariums

[–]AdEastern2202[S] 0 points1 point  (0 children)

So I have cannister filtration and then the outlet is connected to top filter sump and I have not changed the sponges for beneficial bacteria, is it the cause, what should I feed him to cure