Step 4 - Place the carpet underlay in the bottom of the pond

Place a protective lining in the pond, we used old carpet underlay you could use old carpet to if you have some lying around. The important thing to remember is to remove any small sharp rocks from the bottom and sides of your pond.

The lining will help to protect your pond liner the last thing you need is a sharp stone puncturing your liner. If that happens you will be on a never ending search to find out were the leak is in your pond.