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Wonder-Shell Mineral Blocks - WECO

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Made of natural materials, Wonder Shell provides beneficial minerals and electrolytes to aquarium water. Each shell oxygenates, aerates and neutralizes harmful acids in your aquarium water and provides invertebrates with an easily available source of calcium for healthy shell growth. Molded like a scallop shell, Wonder Shell's decorative shape fits right in with the rest of your aquarium's decor.

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