This is what I learned from MarineAquariumAdvice.com and I'd like to share this with you:
When setting up a tank, research on the fish first. Determine which one you want, then shop for the fish tank that can fit the fish. Set it up, then buy the fish.
Most of us (I am guilty of that) buy the tank and figure out which we can fit in it (the reverse). It took 3 deaths and 4 LFS
donations to reduce my population. Oh what waste of money. Poor dead specimen too on my part.
It is indeed a learning experience for me. Good luck with your 75G. Your specimen seems very colorful.