100% brand new and high quality Quantity: 10 pieces Increase oxygen, decrease CO2 and increase pH It is an important tool to succeed Keep aquatic fish on the breathing process Durable, washable and sintered at high temperature, unlike other air stones Creates bubbles in the aquarium while attached to an air pump is < p>Creates water currents and dazzling underwater scenes Size: Approx. 20 mm x 20 mm (D*H) Material: mineral stone + plastic Color: Blue Suitable for soft hose with an inner diameter of 4mm, if you need it, please contact us Easy and convenient to use < p>Scope of delivery: 10 x Air Stone (without retail packaging
