Phyto is good for clams and softies but SPS dont really respond to it. The oyster eggs are awesome. It comes in a small jar you keep frozen but they remain in a gel form.
David how do you like the cyclopeeze? I have a half a freezer bar left but felt it was adding more waste to the water then good for me. My fish eat it but not like they are crazy about it but some of the softies respond well to it.
I also use liquidlife coral plankton in my sofite/clam reef tank.