DIY Network

Placing the Pump Placing the Pump From "Grounds for Improvement" episode DGFI-112

With the centipede unit inside the reservoir and covered with rocks up to the snorkel, the next task is to cut out the area where the pump will sit.

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When moving large rocks, using a "rolling" technique helps move them into place.

The snorkel comes with indentations to show exactly where you'll need to cut in order to place the pump inside. There's also an area on the side of the snorkel designed for the hose to fit through. These pieces can be cut using a reciprocating saw. Be sure always to wear gloves and protective goggles when cutting.

Now you must connect the top of the waterfall to the bottom. The hose needs to be connected to the top through the port created especially for it. Using PVC primer and cement, glue the hose to the appropriate opening in the top unit. After it has set, you'll upend the unit so the hose continues down the centipede unit. After you make sure the assembly is level, backfill the area all around the top waterfall unit.

Finally, cut the hose to the appropriate length and connect it to the pump. You'll then place it in the buried lower waterfall centipede chamber.

With the lower waterfall unit in place, the next step is to lay out the liner where the remaining part of the waterfall will be. Now that all the basic components of this water feature are installed, the real creativity begins! Simply lay the rocks in a pattern that you like. The larger boulders will be used around the border of the waterfall. When moving these large rocks, using a "rolling" technique helps move them into place.