ich, should i qt all fish?

[s2svetko]

my tangs (hippo and white cheek) are showing ich and i want to know if ALL my fish need to be put in qt....

none of the other fish are showing spots but as far as i know they can have it and just not be showing

coral beauty (probably should qt)
Lyretail Anthias (probably should qt)
pair of maroon clowns (probably should qt)
yellowhead jawfish (dont know if i should and very hard to catch)
Mandarin (been told that they dont get ich)

also the hippo has developed popeye since getting ich, how should i medicate him? both copper and Methylene, or hypo (i dont have a Refractometer) and Methylene?

any thoughts?

 

[Steven Pro]

Quarantining and treating all the fish is the only way you can be sure you rid yourself of the parasite.