I recently went the Polyplabs Medic (plus Ruby Reef Rally Pro) route and while it helped the symptomatic fish (Purple and Gem tangs) it was not without consequences. All of my LPS and Mushrooms are in bad shape and I am losing 90% of the acans that I have. I also lost a Mandarin and 3 Lyretail anthias that had been healthy in the tank prior to treatment. YMMV.Yes I'm thanks. I've decided to treat the entire DT 1st with Polyp Lab Medic over 20 days. Hopefully I've caught it fast enough
Good luck.