Can anyone re ommend a top quality non return valve?
My air stone is about .75m below the water surface and the pump is a further .75m below that (1.5m total). I've tried several non return valves (every thing I can find in LFSs) but when I turn the pump off water symphony's back every time.
Happy to pay a few quid if I can find something that actually works.
My air stone is about .75m below the water surface and the pump is a further .75m below that (1.5m total). I've tried several non return valves (every thing I can find in LFSs) but when I turn the pump off water symphony's back every time.
Happy to pay a few quid if I can find something that actually works.