Airstone 5.5i Exten Rect Marin

The Marina Extendable Air Stone 5.5” (14 cm) is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement. This extendable air stone can be attached to other ones to create longer, more stunning bubble displays. The air stone also increases surface agitation, accelerates oxygen replenishment and helps release carbon dioxide build-up.