Air stone 1 inch/2.5cm Ball
Round blue air stone - 1inch/2.5cm.
Suitable for outdoor fish ponds and aquariums. Suits 4mm air line.
Not much more to say!
Well, requires an air pump and air line.... :) Quality, long lasting air stone provides vital oxygenation to fish ponds, indoor tanks and aquariums in conjunction with an air pump. Suits 4mm air line/tubing.