I've got an extra 4 ft x 1.5 x 1.5 tank laying around, and I was planning to keep 3 adult zebras in it. Is the tank too big? e.g. in a high flow tank, will the the food fly everywhere, such that the zebras cannot capture the food?

BTY, I've also got a 2 ft x 1 x 1 tank. Which one would you choose ...