Hi all, I was at the market here in BKK and decided to pick up a small cowfish from a shop that is clean, well stocked, and seems to take care of their fish. I asked him to feed the fish which he did and the fish ate. I didn't notice at the shop but on the car ride back home I noticed a few mild signs of Ich which I didn't take too seriously because I know I already have Ich in my aquarium system but its well managed by polyp lab medic and an occasional low dose of hydrogen peroxide. Well I woke up this morning and my sailfin tang is sick with what I think is a bad case of Ich...he's active but breathing heavily. The cowfish looks about the same...last night he was tasting everything to see if it was food. Is this Ich alone I'm dealing with or something else as well? I feel like velvet would have killed the cowfish already and he wouldn't have had such an appetite to taste everything in the tank...just a stupid case of failure to quarantine because I thought I was already well managing an already present sickness. Please help guys.