Item Type: Aquarium Air Bubble Stone Material: Air Disc Stone1Superior Performance: Aquarium air bubble stone quietly produces small dense bubbles, beautiful and generous, the tiny bubbles are uniform, rugged, low pressure drive (1. 5W?3W air pump). 2Easy Maintenance: Clean the stone once a month to prevent clogging. Soak it in water, gently brush its surface, and let it dry naturally in a cool and airy place. 3Perfect Aquarium Fittings: Aquarium bubble stone aerator releases more bubbles and the gas is in more contact with the water surface. 4Excellent Effects: Aquarium bubble stone aerator helps fish tanks or aquariums get a beautiful atomization effect. Small and compact size, it does not take up space. 5Cautions: On first use, huge bubbles or uneven bubbles may occur, which is not a product issue. Just unplug the air tube, reconnect it, and repeat it a few times. 1 x Suction Cup 1 x Check Valve 1 x Regulating Valve 1 x Aquarium Air Bubble Stone