Hi,i am quite new to the marine side of fishkeeping and i was wondering if any of you can help me i am thinking of buying a powder blue surgeon for my tank this will be the only fish i want because this was the fish that turned me from tropicals to marines but i have recently been told that they are very difficult to keep is this true?i know they are parasite prone so i have bought a uv steriliser just in case any more advice about keeping this fish would be great ,finally would a regal tang be easier than a powder blue? many thanks