When it comes to feeding corals...it really depends on the speices. I agree with the others in that GSP do not require any speical feeding requirements. Just make sure you feed a good variety of food along with dietary supplements (vita-chem, selcon, zoe, etc.) and the corals will be fine. Coral feeding is greatly dependant on the type of coral. To a large degree, most will do well with a quality-fed tank and good lighting.
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian