With the Gravel Vacuum cylinder submerged in the water, simply move it up and down a few times to activate the Self-Start Siphon. Gravel Vacuum Cleaners are designed to separate and remove debris from the aquarium during routine water changes. The X-Large Gravel Vacuum Cleaner features a 2in diameter x 24in long cylinder with a 96in long hose. It is ideal for use in hexagon aquariums and taller aquariums. The X-Large Gravel Vacuum Cleaner comes standard with the Wide-Mouth Nozzle. The Wide-Mouth Nozzle increases your surface coverage by about 20%, allowing you to clean more gravel surface without draining too much water.
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