NQL - The standard 5 gal bucket may want to tip over on uneven bottom areas. I prefer a broader base. Think about buying a saucer shaped plastic water heater tray. Drill appropriate sized hole in the center, put diffuser port in hole thread on the hose barb fitting. Attack 2 or 3 bricks or equivlent weights to hold it on the bottom. The tray or kids snow saucer or equivalent provides a saucer basin that will not tip over yet it separates the diffuser from the sediment and slop. I can send you a picture of one or two examples.
