I need some help. I have a couple of fish that have fin rot. I know it's usually due to stress from poor water quality but my levels are good. I have a 50 gal
saltwater tank with live rock i collected from the ocean (i live in Hawaii) I have a maroon clownfish that first showed signs, a pajama cardinal that has it bad now, a madarin goby who has it a little, a baby toby who is fine and a baby panther grouper who is the lastest addition to the tank and doesn't have signs. I also have a baby snowflake eel and a banded coral shrimp. I don't want to move any of the fish because quite a few have it. Is there anything i can use to fix the promblem in the main tank. Melafix? The levels are PH=8.0, ammonia=0 nitrate=.03. Please give me some advice. The pajama cardinal is looking really bad.