Penn-Plax Aqua-Mist Air Stone Shell, White, Green

Keeping your fish breathing easy starts with good aeration, and the Penn-Plax Aqua-Mist Air Stone in the Shell style is here to help. This single air stone is shaped like a shell and comes in white and green, so it does double duty as a functional accessory and a decorative touch for your tank. It's sold as one piece, ready to drop into your existing setup. A little movement and a stream of bubbles can go a long way toward a healthier, more lively aquarium.

• Shell-shaped design adds a natural-looking decorative element while it works.
• Comes in white and green, a soft color pairing that blends into many aquarium scenes.
• Part of the Penn-Plax Aqua-Mist line built for aquarium aeration.
• Helps add aeration to your tank, supporting water movement and gas exchange.
• Designed to connect to an aquarium air pump so you can put it right to work.
• Single air stone, sold as one piece, so it's easy to add to a freshwater or saltwater setup.
• Tucks neatly into your aquascape, sitting low among gravel and decor.
• A simple upgrade for owners who want both function and a finished look.
• Works alongside your existing air tubing and pump as part of your aeration kit.
• An easy starting point for keeping your tank's water moving and oxygen flowing.

Every aquarium benefits from steady aeration, and this shell-shaped stone makes that practical while looking like part of the scenery. Hook it up to your air pump, settle it into your tank, and let the bubbles do their quiet work of keeping the water in motion. With its white and green coloring and shell shape, it's an easy, attractive way to round out your setup. Whether you're outfitting a new tank or refreshing an established one, the Penn-Plax Aqua-Mist Shell Air Stone is a friendly little helper for your fish and a tidy finishing touch for you.