Help Please!

[naesco]

Originally Posted by nanomano

whats the longest he should dip it? I always wondered myself i have heard anywhere from 2 to 15 minute some people say, but that seems a little extreme

It depends on the species of fish and the condition it is in.
In this case it is a blue tang with black ich and not a tang that has suffered severe ich owing to the neglect of the reefer in helping his/her fish or a tender species.
This tang. once placed in the freshwater of the same temperature will likely swim around and after a minute or two will break the water like it is gasping for air. IME I would not treat longer than five minutes and remove the fish if there is early stress. You can always re treat the fish. Good Luck.

I also would not recommend that you search for the fish with a flashlight to see how he is doing as you will further stress the fish.