I only have a FOWLR, but I made my own and my fish LOVE it.
I used
1 pound raw shrimp
6-8 scallops
1 small can raw oysters
1/2 pound mussels
1/2 to 1 lb cod loin
purple algae
green algae
Garlic xTreme (maybe 1/4 bottle????)
I used a food processor....chopped up the ingredients before putting them into the processor (try to get them to similar sizes so that they get equally chopped), after all ingredients were mixed together I put it into the double zip ZipLoc bags (any size will work, I used quart...but don't fill them too full or you won't be able to zip them back up).