Matala Silica Glass Airstones Size_12L Suitable to be submerged 24/7

Suitable to be submerged 24/7 in either a vertical or horizontal position with an oil free motor

Solid brass construction – Fully waterproof – Built to last

PX cartridges have no chemical residues

chrome plated housing

Matala Silica Glass Airstones Size_12L Suitable to be submerged 24/7Introduces oxygen into water Perfect for applications in tanks and small ponds Top quality and best performance airstones made in the US from a solid piece of glass bonded silica Low maintenance smaller pores equals less chance of clogging, if they need cleaning, just give them a wash in a acid bath (recommended yearly) Long lasting material quality means that the stones wont degrade over time like alternative stones do (if properly cared for) Self