Aqua One Air Stone 2PK

Air Stone Cylindrical 2.5cm. Cylindrical, 1″ (2.5 cm), Durable air stone diffuses water in every direction, Creates a dazzling underwater scene, increases surface agitation,Accelerates oxygen replenishment, Helps release CO2 buildup

Small size fits common box filters and undergravel riser stems and fits standard airline tubing.

An air stone is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement. The air stone also increases surface agitation, accelerates oxygen replenishment and helps release carbon dioxide build-up. Simply connect the air stone to your airline tubing and place it in desired location.