Thanks, Dave,
I have a local supplier who has the powder so I'm okay with that. I'm draining what's left of the water in the pond so I'll be able to lay on top. Everyone I've talked to locally about adding betonite to leaking ponds tells me it works. I'll know myself in a few months maybe. For now, I'm looking for advice on how to spread and cover it. The supplier tells me to use 100 pounds for 25 square feet, but T A&M says 50 square feet. That's quite a difference in coverage. The biggest issue with the powder is that it can blow away. That's one reason I'm tilling into the existing soil. But I don't know if that's an effective method because, honestly, I'm not sure how Bentonite works. I don't know if it has to form its own seal or if it can combine with sandy soil and create a thicker mud that prevents seepage. I'm hoping it will combine. I can say for sure that it turns my sandy soil into a much thicker, pliable and sticky substance.
