Any one have experience w/ Achilles tangs?

[Jasonny5895]

I have a Hippo tang, foxface, maroon clown and diamond goby remaining (and the powder blue, yellow and kole are no longer with us). Ive had these tangs for over a year, all ate great and had no ich till powder blue came in a month ago, and ich was minimal. Hippo looks better than ever know. And my parameters are perfect. I use a nitrate sponge, and ammonia nitrite and nitrate remover with all water additions