Dig the Trench
- If you haven't done so already, mark the location of all trenches with temporary marking paint.
- About two days in advance, soak areas to be trenched with water. This will make digging a lot easier.
- Dig the trenches six to eight inches deep, rounding corners to prevent the poly tubing from kinking during installation.
- You can use a common trench for pipe/poly tubing connecting to different valves and wiring for low-voltage outdoor lighting.
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