Blue tang with recurring ICH

[oscar garcia]

Have a blue tang I have had for 6 months in a 90 gallon. He is the size of a half dollar. I plan on getting him out once he eventually gets too big for my tank.
In the morning he is full of ich spots and by the end of the day everything is gone. This has been going on for weeks but he has shown no signs of stress and still eats like a pig. Will he eventually develop some kind of immunity to this disease??
He was quarantined before introducing into my tank with no problems. I have a few clowns , goby, wrasse and cardinals in there as well as some cleaner shrimp
I feel like doing the quarantine method would be ineffective so should I just keep up the good feeding diet.

Want to know other people's thoughts and opinions please

 

[oscar garcia]

All test levels seem to be fine. no high nitrates

 

[Bdog4u2]

Are you sure it's not sand I've seen my tangs sleep laying on their side in the sand. that's kinda fast for it to go away and comeback

 

[eatbreakfast]

A picture would help to accurately diagnose whats going on.

If it is ich, then removing all the fish and leaving the tank fallow for 76 days will be needed to rid the system of ich.

 

[SeaDweller]

Theres suspicion that the particular strain of ich in your tank MAY die out after a year. I read it somewhere on RC, but I don't hold that as truth. Supposedly it takes 11 successive generations for the strain to become weaker and weaker with each attack. Not sure how much validity there is to that claim. Anyway, in order to treat properly, you need to run your tank fallow for 76 days and treat your fish with TTM, Cupramine or CP.

 

[oscar garcia]

I'm starting to think it is sand that just falls off
I'll post a picture as soon as I get a clear shot

 

[oscar garcia]

Thanks for the input guys, I forgot to mention that I also have a yellow tang in there that are as everyone knows easily prone to ICH and other diseases and he is doing fine with no signs of ICH so maybe it is the sand

 

[SeaDweller]

I've seen ich go as quick as it comes. Here in the AM and gone in the evening. A lot of people try to convince themselves it's sand. Wrasses have a mucous cocoon or coating and that attracts sand, but it falls off as they swim. Tangs lack that.

Sounds like you have ich for aure