I actually have tried using this product from Australia. I have put I think ten of the buckets in spread all over the pond but more toward the corner where I presume the leak to be. And yes it is expensive to have the material shipped from Australia. It may have slowed the leak some, but not near what I was hoping for. Maybe I should give it another shot. I have not had any fish in my pond for two years now since I don't think I can count on the water making it through the summer with the current leak.
