Plant aquarium and reef tank necessity.

Refilable type, high-tech aluminum alloy refillable cylinder.

ON/OFF valve is made of brass alloy which thickens and safety is high qualified.

Light-weight Aluminum Cylinder with one piece burst-free disk valve-assembly meets or exceeds ASTM F2030-005 & European standard TPED.

With blue coating for double protech end pleasing to the eyes and decoration.