Can anyone help me, my gouramis keep keep sick and die. I have a 10 gallon tank, 2 angel fish, 1 silver dollar, 3 tetras and 2 gouramis. My gouramis keep loosing weight look gaunt and them become lethargic, then die. My readings are
ammonia 0,
nitrate 0,
nitrite 0,
pH 7.4. All other fish are fine. Is it the food? Flake food is all I use and a small peice of a
spirulina disk for silver dollar. I am only new to this but would love some advice. The gouramis are my favourite fish. I have lost 3 already and now have 2 new ones and they are both showing the same signs as the others, it is so disheartening.