Mike, we meet @ PBC and discussed pond seepage and Bentonite. Just so you can put a face with a name here. I believe the waxed cardboard is used by laying it on top of the water for the FHM to use for spawning. It will eventually go to the bottom of the pond and will be biodegradable over time. I tried to locate some here in Shreveport @ 3 box companies but had no luck so I went with blue Styrofoam sheets to float for the FHM.
Tracy
