My favorite LFS sells livestock in small plastic containers like ones used for soups in Chinese take out. Plus, I spend a lot of time floating around our pool on a noodle, so I put the two together for the simplest acclimation system ever. A ring is formed with ½ inch hose connected with a small nipple into a float for the container. Every few minutes, a turkey baster in and a turkey baster out. Works like charm.