Welcome to AA!!
Is a general practise to not mix clowns together, especially in such a small tank. The clowns will become stressed from each other. If your percs were laying eggs she will stop because they will become preoccupied with defending their territory. Re-arranging the rocks will not help because the clowns will still be close to each other.
Since your lighting is low the anemone would benefit from feedings at least once every three days with meaty foods like, krill, silversides, etc. If you haven't done so you should anemone proof your tank by covering your PH
, filter intakes with a sponge or screen to prevent the anemones from getting sucked in and shredded to bits when they wander around your tank.