AquaStruct, I build ponds in the northern and western parts of Kansas and I can tell ya beyond a doubt, silty loam is damn hard to seal, in fact tougher to seal than sand. It's shifty, very porous and doesn't compact at all. Give TJ a call/email and discuss this with him, his product works very well in porous soil types if you listen to him, I don't know anyone else that has had as good of success as he has.
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