Tobes, you may be right, he does sift the sand, I wasnt 100% on what fish he was, after scouring pics on the web that was the closest i could think(this is after having forgotten what the LFS said he was)
The urchin im feeding some Nori to twice a week, there is plenty on the rocks for him to eat at the moment too, I am keeping an eye on him.
The sun coral and yellow cup coral I am target feeding with zooplankton, was amazing to see them open up so brilliantly last night under the moon lights! they should be called moon coral not sun coral, I just used the syringe method last night but i was reading up on a method where you cut off the top of a coke bottle and place the large rim round the coral and then squirt the food in the top end, I think I will give this a try this weekend. Right now since he is still new in the tank and the tank is still new I will feed them every second day but i think in the long run twice weekly will be good enough.
The yellow cup coral seems to like when the lights are on though which contradicts what I have read so I will keep an eye on him for now.
I do research before i purchase and I have been running the tank at my work for over a year so I do have a pretty good idea of what I am doing.