How did you treat for Ich (the second time). I dont think the Kordon product does much if at all - so you observed the fish for 2 weeks. My guess is not that transferring the tang to the DT had anything to do with CI - it was already going to happen. You didnt observe long enough if you look at protocols.This started about 3 months ago. I have 4 clown fish a yellow tang and a salfin tang in a 139 gal red sea reefer that is 7 to 8 months old. I did a 4 month cycle before adding any life to the tank to avoid alot of issues people have. I have approx 35-40 sps corals and they are thriving. I bought a Naso tang to add to the family and put him in quarentine for 2 weeks. I used Rid-Ich by Kordon and there was no notice of anything with the fish. I added it to my display tank and 3 weeks later I saw ich for the first time in my tank. I immediatley moved all the fish they to the quarentine tank and treated for ich. I did water changes daily because of the tank having new salt water and not being cycled and ket the fish in the Qt for a month. I noticed last night that the fish are experiencing amonia burn from being in the tank so I moved them back to the display and there showing signs of ich immediatlry. what the heck is going on and what did I do wrong? I lost 3 clowns today and everyone else looks horrible. Someone please guide me.
Secondly - as someone else said - get a good QT system with an ammonia badge and change water when you need to to reduce ammonia. When you change water - make sure to re-dose the copper or what you're using to the appropriate level - or you will be right back where you started from. Leave your other tank fish free for at least 76 days and you should be good.
BTW - dont let those saying tangs get to be xxxx feet long get you down - they might in the wild - but per the research out there - they live to be decades old - and the growth slows dramatically - so they will not get to xxxx inches long very quickly.
