*Features*: *Easily clean aquarium gravel by filtering dirt,fish waste,and debris out of water or directly siphoning the dirt out Easily drain the aquarium through siphon for water change Fits small,medium and large aquariums with adjustable height by two interchangeable tubes Runs on two PCS NO.C batteries(not included) Easy to assemble and use with provided guide Note*:Please check your aquarium water line for compatibility with the product. Available water line range is 34-60cm/13.4”-23.6”,recommended water line is above 40cm/15.7”. *Specifications*: Material: ABS plastic  Batteries required: 2 PCS 1.5V NO.C batteries  Adjustable total length: 56-80cm/22”-31.5”  Recommended water line: ≥40cm/15.7”  Maximum water line: 60cm/23.6”  Minimum water line: 34cm/13.4”  Maximum water flow: 520L/h  Short extension tube length: 15cm/5.9”; water line range: 34-45cm/13.4”-17.7”  Long extension tube length: 30cm/11.8”; water line range: 47-60cm/18.5”-23.6”  Siphon hose length: 70cm/2.3ft  Size(assembled): approx. 2” x 2” x 23.6”/5 x 5 x 60cm (L x W x H) (height is adjustable)  Weight: 220g/0.49lbs  Package Size: 31x12x6cm/12.2x4.72x2.36in  Package Weight: 309g/0.68 lbs *Package Lists*: 1 x Main Part  1 x Connecting Tube  1 x Long Extension Tube  1 x Suction Cup (Short Extension Tube Attached On)  1 x Filter Connector  1 x Siphon Hose  1 x Filtering Bonnet  1 x User Manual