Many LFSs carry Reef Nutrition products and can order the type that works best for you. You can then set up culture containers to culture your own supply.
I use sterilite containers (
https://www.canadiantire.ca/en/pdp/t...-0424277p.html ) to culture my own and use live phyto and greenwater made from spirulina powder to feed them with open ended airline to provide some aeration and culture water movement.
I buy my artemia cysts from Brine Shrimp Direct and grow out the nauplii to adult stage.
http://www.angelfire.com/ab/rayjay/brineshrimp.html