Thanks, I'll try that. By gravel clean, do you mean clean it with a siphon?
2 weeks ago the pH of the tank was slightly above 7, it shouldn't have changed since then. Just tested for ammonia, and its fine, ~0ppm.
I have a male convict cichlid that is about 6.5 years old. Just over a week ago, I noticed a small white mark on his body near the left pectoral fin. It got larger until it was protruding from his body. This morning, I noticed another lump on his head on the same side. They don’t look fuzzy, and...