Does anyone else make their own fish food? I have been making my own for over a year with great results. I buy flash frozen or fresh raw seafood from the supermarket and blend it up with nori, selcon, and a few other ingredients. I dilute it with tank water or RO/DI water till it is like a thick paste. Then I pour the mix into 1 gallon freezer bags and flatten them out so they are about 1/2" thick and freeze flat on cookie sheets. After they are frozen, I cut it up into small squares and re-bag them.
The great thing is that you can tailor to your tank, more greens for tangs, or more meaty foods for aggressive tanks. I also throw in some oyster eggs or other supplements for corals. There are tons of online articles with recipes and such.
Im suprised that more locals dont do this. It is much less expensive than store-bought and you can control what goes into you tank. For my last couple of batches, I found some 2lb seafood mix from the supermarket on sale for about $4 a package. They had clams, squid, tiliapia, rock fish, scallops, halibut chunks and no unnatural added ingredients. I mixed with a package of nori, some garlic and a few squirts of Selcon. When I was all done, I had nearly 5 lbs of food for less than $12.