On Wednesday, 18 September 2019 19:16:15 UTC+1, John wrote:
"Brian Gaff" wrote in
:

Why would you need to airiate the water in a wash basin, its not
exactly a hot tub is it?

Brian


I guess it makes the flow feel nicer and helps mix the hot and cold.

They are supposed to be water economy devices.
And of course BS to encourage the dopey to think they are getting something special.

There is something wrong with your drain. Blockage, airlock or insufficient fall.