I just moved from a 65 gallon to 90 gallon about 4 weeks ago, this week I notice my blue tang had white spots on him (when I got him about 2 1/2 years ago he had ich a few times it never got that bad and just seemed to go away) now he is getting worse and my yt has spots now all other fish seem ok . I am going to setup a hospital tank I just got a used 20 gallon tank ,heater,and one of those HOT power filters minus the carbon my question's are do I have to let this tank cycle or is there are way to seed the tank with bacteria ? should I use any meds and what kind and should I assume that all the fish have it ? . I always feed with Kent garlic and before my tank move I lost a cleaner shrimp could the shrimp have keep it in check? any help will be great .