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Determine whether it's even by placing a carpenter's level on top of it (front to back, as well as left to right). Put the preformed liner into the hole for the waterfall pond. This slight elevation will minimize the problem of soil spilling into the waterfall pond. Apply approximately one inch of sand at the bottom, so that the rim of the liner stands an inch or so above the ground. Indeed, plan on shoveling sand into the bottom of the hole, as sand gives you a base that is malleable (allowing you to play with the height of the preformed liner). But if the hole ends up being too big, you can correct your mistake afterward by applying sand. The depth and diameter of your waterfall pond's hole should roughly match the corresponding dimensions for your preformed liner. Besides, the overhang of the waterfall structure will just be in your way while digging. If you were to build the cascading waterfall structure first and then dig the waterfall pond, you might undermine those rocks. This entails placing some of the bottom rocks very close to the waterfall pond. Take care of the waterfall pond structure first, simply because you'll be laying your rocks for the cascading waterfall structure in such a way that the front of it overhangs the waterfall pond. There is an easy way to guide your shovel as you dig: turn the liner over on the ground, upside-down, where you want the pond to be, and trace out your circle. The Spruce Home Improvement Review BoardĮxcavate the hole into which your liner will be inserted.
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