12' X 12' Underlayment, by DeWitt
This underliner
provides stability and a smooth area while supporting the pond liner
that is often subjected to stress points due to the large volume of
water above. Many ponds are constructed with cardboard, newspapers, sand
and old carpet padding in an attempt to protect the pond liner. These
often rot away, fall apart or are easily torn which can lead to trouble
down the road. The Dewitt underliner is a permanent solution to provide a
worry free foundation for your pond. Designed to protect your pond
liner from rocks and other sharp objects, the DeWitt Pond Underliner is
constructed of non-woven, needle punched fabric that is durable, safe,
and clean. The underliner also allows gasses to escape your pond to help
maintain a healthy- balanced ecosystem. Quick and simple to install