I saw a guy make a small vibrating screen thingy..it was a simple desgin. It was
a beater jig rigged up to do what my compost screening device does only it was
on a smaller scale. As those pebbles bounce all over you run water over them
using that water over and over by catching it below.
Don't do what I did I tried to wash it in the bath tub and wife caught me
This is why I have a shop in pole barn she will not put up with this behavior inside
the house.. Cats and Dogs get away with a heck of allot more than I do
I use a five gallon bucket with 3/8 holes drilled into it. You can get the buckets from local resturaunts for free. Then add in about 3 gallons of gravel at a time and move it around, rinse, repeat. My big issue is sterilizing the gravel after an unknown issue that killed nearly everything. I am at the point where I isolate plants and fish for three or four days.
Gravel is pretty cheap in bulk. Finding the room for 40 or 50lb bags it is a pain.