When should i add a pair of clowns. I want to get 2 true percs but i dont know when the best time would be. Also should i add corals or the fish first? My tank has been cycled for about 4 weeks now. I plan on having a nem so should i put that in before the clowns or when. I know that they usually need a tank 1 year old and i was wondering if i have to wait a year to put my clowns in first.