I used in the past and like Rod's Original Coral Reef food. It is frozen, expensive and has the ingredients listed that seem very good. Years ago, when I switched from other food, the coral's seem to "jump" for this stuff. LOL...
Here is a list of ingredients:
Ingredients: Shrimp, Scallop, Oyster, Clam, Squid, Octopus, Perch, Pacific Plankton (Euphausia sp), Krill, Brine Shrimp, Frozen Red Cyclops, Fish Eggs, Green Nori (Porphyra sp), Red Unroasted Nori (Porphyra sp), Broccoli, Carrot, Micro-pellets, Oyster Eggs, Garlic, Selco, Beta-carotene/Phytoplankton, Astaxanthin, Freshly Harvested Rotifers, and Freshly Hatched Baby Brine Shrimp.