Diffuser/Airstone Backflow Valve Pond Dye Some are well built and

Some are well built and some are not

(2) Adjustable Valves

Designed and manufactured in New Zealand

We've had the tanks specially made to adjust the height of the tank so that kids can see into it while they fish

If there is a blockage then it automatically squirts non-toxic ethanol into the air line to un-freeze any blockage that may exist in freezing temperatures

Diffuser/Airstone Backflow Valve Pond Dye Some are well built andBack 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