Diffuser/Airstone Backflow Valve Pond Dye 2 or 3 years on

2 or 3 years on the pump and timer

4" wide steps

Some are well built and some are not

(2) Adjustable Valves

type of area and bird pressure

Diffuser/Airstone Backflow Valve Pond Dye 2 or 3 years onBack Flow Valve for DiffusersAll diffusers regardless of whether they are ceramic, rubber membrane or other type of material should have a back flow valve to prevent water from entering your airline. If you do get water coming back up your airline it can cause compressor issues as every time your compressor has to restart, it has to first push the water out of the airline which requires extra pressure. Secondly water in your airline can freeze during