This AquaticHI 4.25 inch (108 mm) Round Disc Air Stone is perfect for diffusing air to increase air flow and oxygenation in aquariums, ponds, hydroponics, and aquaponics. The product includes three suction cups to hold the air stone in place preventing it from friction abrasion increasing its lifespan. air stones are made of high quality non-toxic mineral material.

With high temperature sintering, the stones are sturdy and durable, have high dissolved oxygen rate and create even and tiny bubbles rather than a limited number of large ones. Increases water circulation which is essential for all livestock's good health.

• Size: 4.2 in x 0.75 in (108 mm x 19 mm)
• Connector size: 0.197 in (5mm), fits aquarium airline tubing (3/16 inch inside diameter) Bubble size: 300 - 500 microns
• Recommended air pump size: Greater than 4 watts
• Production process: Carborundum material sintered at a high temperatures of 1500 degrees Celsius to provide a high quality product. Other cheaper air stones use sand in place of carborundum and the quality cannot be guaranteed.

Instructions

• Place air stone in water for 5 minutes before use
• Connect airline hose to air stone with an air pump
• Set air stone horizontally in water and use suction cups to hold in place
• Turn on air pump and enjoy the bubbles
• Clean air stone surface for increasing its lifespan
• When not in use clean and store in a dry shaded area

Package Includes

1 x 4.2 in Round Air Stone ,3 x Rubber Suction Cups or 2 x 4.2 in Round Air Stone ,6 x Rubber Suction Cups