Matala® Fine Bubble Membrane Diffusers Flow Rate at 20 Feet of Head_1982 GPH One system helps to prevent

One system helps to prevent the buildup of stains and mineral deposits on the birdbath or fountain surface

mechanical and biological filter system for garden ponds up to 2

Dimensions: 20"L x 15"W x 19"H

In fact this special air disc only adds less than 4 inches of water depth back pressure

Matala® Fine Bubble Membrane Diffusers Flow Rate at 20 Feet of Head_1982 GPH One system helps to preventMatala Air Discs are available in a 9 inch or 12 inch diameter and are designed for the wastewater treatment industry to very high standards. The air pore size in the rubber membrane is designed to give a medium size bubble which will not put any significant back pressure on the system. In fact this special air disc only adds less than 4 inches of water depth back pressure. The 3 4" male thread makes it easy to attach to your feed line. The 9 inch