those are super hardy. when i first set up my tank i got two about 1 month in and some morron at the
lfs said i should dose some
copper based ick med to get rid of some ick on my yellow tang (still alive after 2.5 years) and it dyed them bright blue. i kept them for about 4 months till i started to get a little more reef smart. they were a big hit at the
lfs when people saw these super bight blue pink tips
