Tony, my company has had good luck using the product. Cost is dependant on quantity and shipping or delivery. The representative for Seepage control to contact would be
shawn walstad 800-214-9640. They can use a soil sample and leakage rate to figure quantity to use. It can be applied right to the water or compacted into soil in two six inch layers. If you could mention Robert with Aquatic Biologists I would appreciate it. Also if the pond is fairly new the soil may expand itself and seal off the leak.
