IDS Home Fish Tank Aquarium Water Cleaner Gravel Siphon Auto Washer Vacuum Syphon Pump Battery Operated Aquarium Vacuum Cleaner + Water Siphon With this aquarium gravel siphon tool,you can remove the dirt from the bottom of your aquarium Supplied with two suction pipe sizes, it is suitable for both large and small aquariums Also can be used as a water siphon for water changes, or to empty your aquarium when you connect a hose to outlet Telescopically adjustable height for large and small aquariums, Maximum water depth 100 cm