Yep, I was one of those hoping for a magic solution but the db100 didn't work. I'm thinking that a person could get about the same results with alum since the primary function of the db100 is to bind with the suspended particles causing them to sink to the bottom. I recall noticing a reduction in my seepage after my first alum application but it was only temporary and I posted about it.

http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Main=11368&Number=125508#Post125508

That is nice Steve. I wish we could get a 3 inch rain. Send it over here.