I currently use reef chili. I have used marine snow and a phyto-something or other...it was kent stuff all I remember. I never really got much benefit from feeding, as I have no non-photosynthetics. Just started back up again with the reef chili to see how things go.
I broadcast feed. Idk the container size, it's a small container but a little goes a long way. It comes with a spoon to measure it with and each leveled off spoonful is for 20 gallons according to the instructions. I've still barely made a dent in the stuff b
The only corals I occasionally target feed with some mysis are my "active" eaters like my palys, acans, trumpet, candy, & hammer. My softies & SPS are more trouble than they're worth as far as too many nutrients in the water vs. what they consume.
Wanna calculate the cost of that new reef tank?? Take your worst nightmare, double it, and you're halfway there.