Tank is set up with Safe-T-Sorb. The substrate looks just like Roy's picture! I am still working out the 'scape. 40 lb bag did a tank 5' x 16", 2" deep. I actually have it sloped, only about 1" in the front, 3" in the back. I doubt it will stay, though.
I dumped it into the tank dry (very careful not to breathe the dust) then filled the tank about 6" with a strong flow from the hose, making sure to stir the material as much as I could. Water was pretty muddy looking. Pumped that out. Second filling (again, 6" deep, lots of stirring) still somewhat muddy, but better.
Next filling was running the water in slowly over the (empty) STS bag. The filled tank has some haze to it, but I would go ahead and put fish in it, it is not that bad. However, I am doing a fishless cycle while I continue 'scaping, so fish are a little while off.
I will also monitor the KH, and report back.