I have a well established 75 gallon tank. I have a pair of Clowns 5 years old, a Lawn mower blennie 5 years old. A chromis 3 years old, a blue damsel 5 months old, a Puffer 1 yr Old. After 5 months of my last added fish the damsel, i put a Coral beauty angel on hold for 2 months at my local...