hospital tank for ich

[amber3k]

So I keep having round after round of ich. Normally it shows up only on the blue tang but is now showing up on a copperband butterfly. It never seems to bother the tang so I didn't worry, but I worry about the cbb, he is my aiptasia eater and is nice to watch. My problem is I'm worried on how they will do in a smaller tank. My dt is 150 gal and every one has plenty of room. My hospital tank is 30 gal. My current fish right now are:
two clowns ( not positive if percula but was told they are)
one saddle back clownfish
one firefish goby
blue tang
ccb
Ruby red dragnet, only eats live pods
Potters angel
Should I be running another hospital tank and separate some fish?

 

[snorvich]

If you want to remove ich from your display tank, all fish will have to be treated and the display tank left fallow for 72 days.

 

[amber3k]

Thank you. Yes, that is my plan assuming all these fish will do fine together in a 30 gal for that long or should I be running two separate tanks while my dt remains fallow?