Next we buried the inflow flex pvc pipe from the pump up to the barrel filter.

At the point I knew the pipe would run 6 inches under the flower bed, I placed broken white flagstone over the pipe. This way.. should you dig too deep, your shovel will hit the odd placed flagstone, alerting you to the danger of severing the pipe below!

(You might notice the vertical board that runs down the deck with the 4 inch outflow pipe protruding from it. This is to prevent backfill dirt from sloughing back under the deck)

Now it's time to mark out the stream coarse! Used yellow spray paint to get a idea and feel for the run.
Began to make steps and elevations out of dirt to create pools and falls.

Laying down the liner. We used soft topsoil (being careful no rocks were mixed in) so no preliner used. If we needed one, I would have used old carpet. Just make sure to remove carpet tacks