My 180 gallon tank has been running smoothly for about 5 years but, in the past few months I’ve neglected it and haven’t been doing enough water changes. I’ve been back to taking care of it 100% but I noticed my peacock bass had s fungal infection on its eyes and back. I am currently treating it in a separate tank. The only other fish in the tank is my Motoro Ray. I recently did a 60% water change but he doesn’t seem 100% and is not eating as much as usual. I was wondering if I should treat the entire 180 to make sure the problem is taken care of. If I do I am planning on using marineland all in one remedy or API fungus cure. Is it worth it? I don’t notice any fungus on him but I’m still worried.