I use a bag of misc. seafood (from Sweetbay Stores in FL); it has mussels, clams, shrimp, octupi tentacles, from the frozed section-(1lb.); 2 gloves of fresh garlic, and a few leaves of baby spinach, and Selcon-1/4 tsp. Put in a small food processor and mix.Then to a gallon ziploc and flatten and freeze. Some cut it in squares after partially frozen, but I just break a piece off and soak in SW and feed. That bag will last you months!..Good for FW fish too! Especially cichlids.