Well I wish I had a definitive answer but unfortunately I don't. I brought some water into Safari before I hit the system with Prime and Japarto didn't get around to testing it until yesterday but all the parameters came back perfect so he doesn't know what's going on. I suppose the reason the first test came back positive with ammonia is because that water was from after I hit it with prime and Christina tested that the day of. After doing the water change, almost all the fish have bounced back. Everyone's showing promise with eating again except the powder blue and the purple tang. They just hide in a corner together which is never good. I'm going to do another water change tonight plus I've turned my skimmer and carbon reactor back online and added my filter socks again to help with bacteria so I'll just have to keep an eye on things, which isn't going to be easy with my wedding this weekend and a honeymoon next week
So far most of the fish are doing better though. I did lose my sailfin tang though sadly.