. so I got a wild hair and let my mind go. I started with a 5 gal
bucket and my drill. I drilled hundreds of 1/16 inch holes in the bottom. Filled the bucket up with the gravel I was going to wash. set the bucket on 2 racing stands and let the hose go. I wasn't liking the water flow so I filled up another 5gal bucket and dumped it in. That was the result I was looking for. It flooded the rock and washed it out in just 4 flooding.
So I had some black sand to wash. I thought quickly and grabbed a pillow case and put it in the bucket (knowing I needed something to keep the sand from draining out) I used the same flooding method and my sand was.clean in 6 floodings.