ADA Aquasoil Powder type only?
I am in the planning stages of a new 12 gallon long tank and am planning on using ADA Aquasoil for the substrate. My question is if I can use just the powder type? The normal type looks to me like the grain size is too big for a small tank. I was also reading through the substrate section from ADA, and they seem to recommend using the normal type to create the slope and then capping it with the powder type so only that is visible. I was also taking to the guys at my LFS where I will be buying it, and they recommend to not go deeper than 1/2 to 1 inch with the powder type. My only concern with doing this is I would think the Powder type would eventually sift down into the normal type and not really be visible anymore.
So has anyone used just the Powder type for a settup? How did it work out?