Battery driven aquarium vacuum. Remove dirt from the bottom of your aquarium with this handy tool. Can also be used in nano aquariums 20cm high . Extendable for aquariums from 33 to 60cm depth. Includes a hose for easy water changing. Works with batteries c lr14 .. Features. Vacuum cleans the bottom of the aquarium. Handy siphon function- simply connect length of tubing to outlet to freshen aquarium water or siphon out. Max water depth 52cm. Filter bag included. Flow rate 520l h. Operates on 2 batteries not included . Replacement bags available. Please click here for instruction manual