It also includes a small ball valve that will allow you to adjust the fountain’s flow, giving you the option of creating anything from a calming trickle to a formidable geyser. (The screen and support decking can be camouflaged with small stones or even mulch.) The pipe that carries the water to the top of the sculpture screws onto the pump. It also needs to be accessible for maintenance after the fountain is built, so you’ll need to cut a trap door in the screen that’s big enough for you to reach in, unhook the pump, and pull it out. Since the pump is electric, the fountain needs to be within reach of an exterior outlet-pump cords rarely reach beyond 50 feet, and manufacturers discourage the use of extension cords. It sits below the water line in the basin, recirculating and fine-filtering the runoff from above. The submersible pump is the heart of the system. The screen is topped with a support system made from a strong but water-resistant material, such as composite decking, to keep the body of the fountain from falling into the basin. Above that is a rigid mesh screen that blocks large debris from getting into the tub. It starts with a waterproof tub or basin that lines a hole in the ground to make a reservoir for the water. For the project shown here, we used large stones found on-site, but pavers, some metals, or pottery will all work (see our “Fountain Buying Guide") Regardless of the fountain material, the guts of the system remain the same. The sculpture can be built from any material that will withstand constant water. A fountain Is composed of three things: water, which flows up a pipe and trickles back down in a continuous cycle a pump, which propels the water and a piece of sculpture, over which the water flows.
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