Yeah mine was dirty as he**, but I only used maybe 1-2lbs. of it along with half a box of first layer of pure laterite, and mixed it into my topsoil. I'm still messing around with some of the driftwood pieces for the tank, got this nice branch of an old oak tree that looks amazing in my tank. But I got it sitting out while the GE Silicone I is drying, cause I sealed it onto a good size rock to keep it from floating up and destroying the soil bottom layer.
Then I may check out what other pieces of the oak tree will look good in the tank. I'll take some pictures tomorrow so you can see how the tank looks at this time.