I know there are tons of threads on tang compatibility but in an abundance of caution, would like opinions on whether I can have a purple tang and yellow tang in my new Red Sea 3XL 900 (190 display). Plan is to add them at the same time and last: (1) peaceful fish have will be added first and (2) my Pygmy angels and hawk fish are added as they are kind of jerks, and (3) then add both tangs last