Hi this is my first post here. I have 2 adult angelfish, both are active and eat fine. Water has below 5 ppm of ammonia and nitrite and about 20 nitrate. One of the angelfish has had a swollen eye for a while. In the beginning it had white stuff around the edge of his eye and I treated that right away with aquarium salt, melafix and pimafix. For about a 2 weeks however the size of the eye remained the same but just tonight I noticed now both of his eyes are starting to swell but there is no signs of ich or any white. Not sure what it means but any help or possible treatment options would be appreciated. (The other angelfish has had no issues and her eyes are much smaller)