Hmmm, yup pressure works good too.

12 Ft/head = ~5 PSI if I remember right?

Maybe an MPX???? (tube version) with some scalerobotics code.
Feet of head, instead of altitude. ??

Altimeter : up to 16 bit altimeter solution
http://sites.picbasic.net/component/...,91/pageid,81/


MPX4115A Datasheet (up to 16 PSI)
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