I make my own frozen food...
1 x formula 1
1 x formula 2
1 x packet of nori
1 x bottle selcon
1 x pack of cyclopeeze
1 x pack of blood worms
grated shrimp
grated scallops
1 x pack of dried phyto
some dried food... pellets, flake, etc
I blend it up, adding different bits at different times to get lots of difference particle sizes from chunks to microscopic bits.
Then I pour the slop back into the plastic cube sheets, and some into plastic ziplocks, and let it freeze into sheets.
The mix of sizes means that everything eats... inverts, fish, sps, lps, etc. All is happy.
Sometimes I add garlic, sometimes vitamins, etc. If the store has it I'll throw in clams, squid, whatever, really.