is ich alays present in saltwater fish tank?

[wooden_reefer]

Say you are on a boat floating on a coral reef. If you scoop up a cup of water without fish or organism large enough to be seen by the naked eyes, is that chance that the cup of water contains ich high or low. I'd low, may be quite low.

This is not the same as putting any water from your LFS. Who knows what the wholesaler had done. May be he had mixed coral and other inverebrates with fish.

 

[Toadally]

<a href=showthread.php?s=&postid=15417506#post15417506 target=_blank>Originally posted</a> by waynem
I had ich years ago in my tank, one fish died rest survived. Just recently I move them all to a new tank at my new house and what do you know the ich came back.

Its only on the Tangs and it must have been the stress of moving / catching / new home that did it.

Not one sign for years, perfect water conditions and it never went away.

So you didn't introduce any new fish after the move??