Nice corals.put it somewhere that it won't get blasted with flow.you want the fleshy part to sway softly in the current.to much flow can
Cause damage and cause them to stay closed.also low to medium light.preferably in the sand bed like you have them now.as far as feeding mine have always liked mysis shrimp about once a week,but you don't have to feed them as they will get what they need from light and what's in the water column