flameback

Hello, I'm new to the site. New to the saltwater hobby as well. Tank is about 2 months old. Waterbox 70g (45g top and 25g sump). I have 8 fish (2 mochavinci clowns, 3 cardinals, a flameback angel, royal gramma, and a lawnmower blenny). All seems to be going well. They all like each other...