Hi Sowal.com- I came on here from a link someone sent me about the talk about the septic tanks on the beach which really won't be a problem anymore beecause they will be protected from high water by this geotubes system. wanted to share some photos that some of my neighbors are putting in a t gulf trace. I know a lot of other owners are also going to do the same thing all along the beaches and they have been proven to work just fine in other places. This product is a series of textile bags that can be filled with water and then any color sand for a permanent application and covered with 3 feet of sand to prevent erosion of the dune and provide a restored dune. The sand can be cheaper dirt like seen in the photos cause it isn't going to be spread by waves or anything else. This method is really infailable. Thge Dep doesn't stop it like some other things like boulders or seawalls.