I know about that. When I started up this tank, I also lost a maculiceps and a "few" other fish due to my lack a patience 
My male rhomboid is blind in one eye and has been for a couple months. IT was fine and then one day I saw a growth in its mouth, much like a tumor. It developed pop eye and the tumor went away, now it is blind in one eye.
My male rhomboid is blind in one eye and has been for a couple months. IT was fine and then one day I saw a growth in its mouth, much like a tumor. It developed pop eye and the tumor went away, now it is blind in one eye.