seems like you went for it, so please try to provide it with its needs ....
you are one step closer to sucess with these beautiful animals, ures is eating.
now ... this fish EATS ALOT .... it out eated all my fish [even my emperor angel] ...
feed it multiple times a day, NLS pellets, LOTS of nori and greens, and PE mysis.
if you feel like the ectra feeding is taking a toll on ure water chemistry, please give the fish away, or do more water changes, feeding it less means it will die SOON after ! [I left mine for 2 weeks on just pellets, after 2 years, and came back after vacation to find it dead ! I never got this sad for loosing a fish ...]
lastly, if ure PBT starts harrasing it, one has to go ... the major reason for mine not making it was my anchilles harrasing it, specially when I was away and they were offered no nori [which keeps the piece]
good luck, and please share pics with us on the primer thread

not an impossible to keep fish ... but it takes alot top keep it fat and happy.