Do you live in a house, or apartment? The reason I ask is because most people that do live in a house tend to use the hose for washing substrate, I've seen people do it with Flourite. They'll put about 3-5 pounds of Flourite into a low profile rubbermaid container, and then let the hose run right into the container and it causes the small particles to wash right out of the Flourite. They'll do this to all of the Flourite until each "trial" runs clear water, then toss the cleaned substrate into an empty bucket, and then do another 3-5 pounds, and repeat until it's all been cleared out.