6" Multi Vent, Per Foot

Multi-Vent Underliner System

Multi-Vent Underliner System is a patented, innovative and cost
effective system designed to protect pond and lagoon liners from
damage caused by methane gas and water accumulation.

Multi-Vent is a series of perforated tubes that install under the
liner. The tubes are wrapped in a non-woven geotextile to prevent
plugging. By simply laying a strip of Multi-Vent on the ground
before installing the liner you can prevent costly future problems.
This easy to install system is effective, low cost and best of all does
not require cutting the liner.

It takes a great deal of pressure for the water or air to lift the liner.
With Multi-Vent, neither water nor air can build up pressure under
the liner. Instead it will vent through tubes to the outside of the
pond, eliminating any chance of the liner floating. Because of its
low cost, Multi-Vent is cheap insurance under any liner job!!