I have heard people say in the past, that you can feed your entire tank oyster eggs, and that will be sufficiant food for sun corals. I still spot feed however. Oyster eggs definately make the polyps come way out though. I usually alternate between eggs and Phyto. Then Mysis once they entend themselves. Now that they have gotten used to the feeding regimen, they will exntend every night at the same time, even when I am not feeding. They are doing well.