Greg, how do you get past the supports every 3 ft. when running under water or even under the walkway I pictured, where I can't get too?
And Reno, your comment about it being a silly idea of electric shocks in the water. I've been reading of a lot of fatalities of people getting eletocuted while swimming. Maybe I'm misunderstanding what you meant. Right now I can't remember the name of what it is technically called.

Next time I get a chance I'll ask our inspectors here about running the pvc under water.
Thanks again for the input.