Hi i just have a few questions i just got ick like tree months ago as the last thing it could happen since i start this hobby on february .have got green algae blooms..diatoms blooms black cyano on my sand bed .... well after been reading for few weeks i decide to make a hospital tank .put apart my whole tank to get my fish . treat them whit cupramine for four weeks .now there is the question manny people says to leave the tank follow for tree ,fore ,five ect.,ect.. i decide leave it for five weeks start to put my fish back in .and sorprice after two weeks see my clown fish have two white spots then my black and white chromis also have two spots after a week there was gone and not come back .now just today i see two white spots on my yellow tang none of the other fish have it hes eating well and very active ..now i need some advise should i wait to see if they got some inmunity on ick or should i get the stress of put my tank apart agen and treat them whit cupramine ang leave the tank fallow for nine or ten weeks ? (Sorry for the spelling)