I am setting up a new reef tank, 90 gallon aga, currently have 4 small fish, 4 shrimp and the clean up crew. no corals yet. I'm feeding 1 cube of frozen brine shrimp a day.
Is this enough, is there any certain formula to go by as my tank grows?
Ditch the frozen brine immediately. 8O It is not nutritious for one thing.
Chopped Piscine Energetics mysis shrimp would be a good alternative, depending on the fish you are feeding ? Feed slowly, so they can consume what you are giving them.
There are lots of good foods depending on what you are targeting.