Hello well to start off the tank is 5 months old and all additions were quarantined for observation for 4 weeks ( no treatments ) kicking myself for this now but after 4 weeks of observation I added a powder blue tang to my display. (135 gallon 72x18x24) and within a week he came down with ick. Completely covered in white spots and after a couple weeks his skin appeared to be peeling off, I thought maybe he was healing. I was over feeding to hopefully help him beat it and he ate like a pig the entire time I thought he would overcome it. All other fish never had a spot and ate fine and acted normal. I woke up 2 days ago to my starry Benny (my favorite fish
!) dead in the sandbed, with no spots. I thought that was weird and that night my powder blue after 3 weeks of battling ick but somewhat acting perfectly normal and healthy appeared to act drunk and then slowly lowered himself to the sandbed and died. I thought it was all over all other fish acting and eating normal, 0 ick spots, until I found my Midas blenny on the sandbed this morning with hermits huddled around him. I am really worried about my other fish I have 2 blacker ice clowns, 1 red velvet fairy wrasse, 1 melanarus wrasse, 2 Bangaii cardinals, 1 fire fish, and 1 chromis left in my display and a blue jaw trigger in quarantine. What should I do?????? I have 0 ammonia and nitrite and my nitrates are at 0.2, please help! Thank you I have never been through anything like this! New to fish disease!