Acrylic Air/Oxygen Flow Meters Size:4.0 to 40.0 CFH - 1.9 to 19.0 LPM Each package will make a

Each package will make a 32 ppt salt solution at listed volume

allow 24 hours to cure fully

you have the freedom to adjust the aerating fountain to fit your pond

Phosphate and nitrate free

A screen sits above the reservoir to help evenly disperse the flow of water

Acrylic Air/Oxygen Flow Meters Size:4.0 to 40.0 CFH - 1.9 to 19.0 LPM Each package will make aThese acrylic, block style flow meters are clear and one piece, with built in, brass, flow regulating valves suitable for air or oxygen. The scale reads in cfh. This is cubic feet per hour at standard pressure (sea level) and temperature (68F, 20C). Connections are 1 8 NPT female pipe. Price includes 1 4 barbed brass inlet and outlet adapter fittings. Calibrated at 0 psi.