HELP! Old tang not friendly with new tang

[Keri]

Originally Posted by bryceschutte

Yellow tang is doing great in the sump. Looks like he's heeling up already and he is alot yellower than he was yesterday. I have a 90 gal display with a 30 gal sump. IM going to give him a week to get nice and healthy and then try the mirror trick. How long do you leave the mirror in the tank for?

I got rid of the ick a month ago.

Sorry, you will never be rid of the ich in a display tank (unless you have no corals or inverts and stripped it bare, treating with hyposalinity or copper) or you have taken your fish out and treated in a separate tank leaving the display tank fishless for at least 6-8 weeks. It "goes away" and doesn't rear it's ugly head until one of your fish is injured or stressed.


I'm not trying to be discouraging, I just want to to know to still watch out for it. I wish you and the new fish the best of luck, but be careful, 2 tangs in a 90g just might be 2 tangs too many.