Write the next sentence in this paragraph:

How to build a koi fish pond
Buy all your supplies.
These are listed below under " things you'll need ". You might want to hold off on the koi until the pond is ready though, especially if you're slow at digging and don't foresee completing this project in an afternoon!
Measure the plastic pool as best you can using a measuring tape.

pick from the following. (i). Dig an appropriate hole for the pond, going by the measurements you've made. Choose a flat, available area of soil. (ii). Once it is measured, cut it down to size. Buy a cutting knife, and saw the plastic pool into manageable pieces. (iii). Plug in the water pump and bring the pump up to maximum power. Mark a hole 10 feet (2.7 m) deep in the middle of the bottom of the plastic pool. (iv). Use a green marker to mark the initial size of the plastic pool. If you're standing upright, measure from the corner of one of your legs towards your ankles.
(i).