I have a BD installed but I did not install the diffuser yet, so I have just
a raw pipe sticking up. I do not see any evidence of a vortex being created
in the water. Is it possible that the combination of 4'' pipe and size of my
pipe negates my need for a diffuser?

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BenignVanilla
Pond Site: www.darofamily.com/jeff/links/mypond

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