Water perameters are 0 nitrite 0 ammonia and 40 nitrate. Tank is a 55 gallon established for a year and a half. Filtration is a fluval 406 and tank is aerated and a circulation pump is also in the tank. So the story is he was transferred from my 210 after he was getting a little beaten up to this tank about two weeks ago. He never regained his vigor and is now resting on the bottom and breathing has become harder for him. He won't eat and I haven't seen him poop for a while. He has white spots on his face and bottom of his throat area. Possible bacteria secondary infection? Columnaris? Please help any suggestions will greatly help. And I just did a 75% water change.


