I used to buy food from Scott 711 for a couple of years and now make my own. It is really easy. I buy most of the ingredients from the local Asian market. I use a cheap blender. I blend the ingredients with rodi water in the blender and blend to slightly chunky. Then mix all the blended stuff in a bucket then put in sandwich bags and freeze. I make about 6-8 months worth at a time and takes me about an hour or two from start to finish. Lots of info on the web and WAMAS.
My basic ingredients follow:
From Asian store:
-Frozen Seafood Medley (contains: shrimp, squid, cuttlefish, mussel, and octopus)
-Frozen Oyster
-Frozen Smelt (same as silversides)
-Nori (seaweed)
Bought elsewhere
-Reef Roids powder
-Spirulina powder
-Kent Marine Zoecon
-Frozen Mysis shrimp
-Frozen Calanus from Piscine Energetics