I recently lost my Longfin Bannerfish, Clown, and Anthias due to Ich. I have a Yellow and Sailfin Tang in a 60 gallon tank that where starting to show signs of Ich after my loss. After adding garlic to their food and more frequent water changes, it seemed that they were getting better. But now i see red spots on both sides of them. The sailfin is acting normal swimming aroung and eating plenty. My yellow tang seems really shy, hides alot and on occasion comes out to eat. Unfortunatly i was at work when my fish i mentioned died, so they were in there till i got home. PH- 8.0, Ammonia -0, Nitrite-0, Nitrate-20, Salinity-1.21, Temp 78-79 F, KH -10. Usually do 5 gallon water change a week, but recently been doing 10 gallons a week. I have Sailfin and Yellow Tangs, 2 Blue Green Chromis,1 Lawnmoher Blennie, 1 Diamond Goby, Hermet Crabs, Snails, 1 Cleaner Shrimp, and a Sand Shiffting Star. I have a KentMarine Phos Reactor, UV Sterilizer, Chiller, Over flow and Wet & Dry Filter. I hope I can help my fish.....