I have bought a bottle of fry food, but for a bit of variety would the rotifers that are sold in LFSs for saltwater tanks?
Is it worth investing in a brine shrimp hatchery or is bottled food fine?
I'd feed infusoria (equivalent to liquid food, I think). Then move onto decapsulated brine shrimp eggs (I've given up on the messy hatchery business), spirulina, powdered prepared foods. Then live foods, prepared foods and freeze dried blackworm.