1、This aquarium bubbler gradually diffuses air into the water tank, helping to eliminate large bubbles caused by the filter system and noise. 2、Oxygen that generated by this air stone will increase in the circulation to keep the fish healthy. 3、This non‑floating oxygen bubble diffuser is very suitable for all kinds of aquariums, and can easily match all styles. 4、Different from similar products on the market, this aquarium bubble stone is easy to install within a few seconds and has a non‑floating and practical design. 5、DIY connection, create the bubble length you need and adjust it as you like. But it needs a very powerful air pump to have better results. 1 x Bubble Bar4 x Sucker Item Type: Air Stone BarMaterial: White Fused AluminaSuction Cup Diameter: Approx. 2.5cm/1inApplicable Air Pump Power: Min 5WApplicable Inner Diameter of Trachea: Approx. 4mm/ 0.2in