I’m new to this hobby for having a saltwater reef tank. I currently have a 55 gal. tank with underwater filtration grid & a filter system on top of that for a 75 gal. tank. I also have an LED 2-1/2” aeration ring. I have a 2-1/2” yellow tang, a 2-1/2” blue tang & a pair of orange/white clown fish. They all get along great & stay close like there a family. My ? Is is my tank large enough to have a few more different fish, I like having a variety of color in my tank but don’t want to risk the peaceful life my fish seen to enjoy

