On Monday, September 17, 2018 at 12:44:06 PM UTC-4, Brooks Coleman wrote:
replying to Newser, Brooks Coleman wrote:
I did the same, but want to not only keep dirt out, but water from flowing
thru the lines. The pvc houses an electrical cord that powers an artificial
stream.. I don't want underground dirty water running into my clean water
artificial stream. Help??


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Normally PVC electrical conduit is not plugged to keep water out. It's
brought out at both ends into electrical boxes and the conductors are
rated for wet locations. With the ends open you get some air movement,
but you still can get some condensation.