(6 Pack) Weco Wonder Shell Natural Minerals, Large, for a Total of 6 Large Shells

Decorative, molded scallop-shaped shells, Weco Wonder Shell is made of all natural ingredients that provide beneficial minerals and electrolytes to aquarium water. Each shell oxygenates, aerates and neutralizes harmful acids. Provides crabs, snails and turtles with an easily available source of calcium for healthy shell growth.