AquaticHI 2 Pack Large 4 inch (100 mm) Cylinder Air Stone Aerator Diffuser for Freshwater/Saltwater Aquariums, Fish Tank, Pond, Aquaponics, Hydroponics

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⭐️ Cylinder Design: Maximizes the outlet area of the air stone to provide a larger area for bubbles when standing upright
⭐️ Small Micro Bubbles (300-500 microns): Airstone Made of high quality carborundum material
⭐️ Benefits: Increases air flow/circulation to oxygenate water for health benefits to aquatic life
⭐️ Ornamental: Add beauty to your display aquarium with this cylinder air stone to create micro bubbles
⭐️ Package includes two cylinder air stones. Dimensions: Height 4 in, diameter 2 in