I bought the S grade, and its a little smaller than playground sand. You can pick up T grade as well, but I don't know how coarse that stuff is. It all comes pre-screened, so there's not much rinsing you need to do. I got black sand. When I rinsed it, almost no dust came out (the quartz is very hard and difficult to pulverize). However, it did turn my arm black. I worried a little, but nothing came of it. It looks great in my tank. When I vacuum, I use a 1" dia. clear tube for the nozzle hooked onto a 5/8" dia. tubing. This vacuum is a little slow, but it's perfect for the sand. It will pick up the sand but won't actually suck any out unless I stuff the gravel vac way in the sand!