Is 4ft too big?

[stinky]

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 for the 3 adult zebra?

[TwoTankAmin]

Either works, I would go for the smaller tank but would actually prefer a 20 long for a trio. You don't need high flow, just well oxygenated water and some movement.