OH NO! POOR MIZU! Ok, so Mizu was doing fine, his tail was getting better, and he was blowing HUGE bubble nests everywhere. Then all of a sudden yesterday, his fin rot started again. Which is weird because I've been treating him with Melafix. It's really weird because its only on his tail, and its not on his other fins. I have NO IDEA what to do! I'm getting him a new filter tomorrow, so maybe that will help keep the water cleaner, but I don't know what to do about my poor fishie! I feel so bad for the little guy! He seems to be fine though, because he's contiuning to blow bubble nests. What do you think I should do for him? Help! I'm running to petco first thing tomorrow morning, so any advice would help!!!