Complete sludge-sucker kit keeps ponds and water fountains clean and clear of fish waste without stirring up matter that can cloud the water. Plus, fish don't have to be removed or displaced. Built without moving parts for long-lasting durability. Simply attach unit to your 4200 max. PSI, 5 GPM pressure washer for ease of use. Can also be used in spas, small in-ground pools, vinyl kid's pools and sump pits. Includes filter kit. Brush attachment shown is not included.