He or she will live for decades, and you want to have your pond the way you want it so you don’t have to change it. When a pond is put in a subpar place, it will probably be neglected and become an eyesore. Not all ponds take a liner.
When you aren’t able or you’re disinclined to purchase it, you can elect for a DIY pond filter design and earn a filter system all on your own. The plan of a pure garden pond with or without a liner will be the same. You’ll also wish to keep your pond a bit more regularly, and make sure it remains free of leaves or floating debris.