How much to feed and a question on fighting snails

[CzarKasM]

I have 1 Yellow Tang, 1 Percula Clown, 3 Yellow Tail Blue Damsels, 1 Peppermint shrimp, and 20 snails, Mexican Turbo, Nassarius Snails, and Atlantic Turbo Snails.

I only want to feed them once per day, but I need to know how much of a frozen cube I should feed them at once. I usually cut the cube in half, then dip a cup into my aquarium, and unthaw the frozen foods in the cup I dipped. Am I feeding too little, or too much? I also put freeze dried green algae on a veggie clip for my Yellow Tang and keep it there all day, I change the food on the clip twice a day.

My other question is.
My Nassarius attacked two of my Atlantic Turbo Snails, and killed one, possibly two. Is this normal?

Thanks in advance

 

[Anonymous]

I have 1 Yellow Tang, 1 Percula Clown, 3 Yellow Tail Blue Damsels, 1 Peppermint shrimp, and 20 snails, Mexican Turbo, Nassarius Snails, and Atlantic Turbo Snails.

I only want to feed them once per day, but I need to know how much of a frozen cube I should feed them at once. I usually cut the cube in half, then dip a cup into my aquarium, and unthaw the frozen foods in the cup I dipped. Am I feeding too little, or too much? I also put freeze dried green algae on a veggie clip for my Yellow Tang and keep it there all day, I change the food on the clip twice a day.

My other question is.
My Nassarius attacked two of my Atlantic Turbo Snails, and killed one, possibly two. Is this normal?

Thanks in advance

Chances are you saw them attack a newly - dead (or just about to die) turbo snail. FWIW mex turbo's require a colder water environment - so if your temp was high - it could have died, and the Nassarius snails took advantage of the "snack".