Description: - Fish tank siphon pump is an perfect cleaning tool to clean gravel and change water. Cleaning fish tank will become very effortless. - Fish tank vaccum cleaning uses 2 batteries (2 C/LR14), just press the power button then start working. Please don't use it continuously for more than 30min to preventing motor damaging. - Three tubes of different lengths can be freely combined, the maximum length of the tubes combination is 82cm. Suitable for small, medium and large aquarium. - You can install the aquarium gravel syphon acccording to easily. To start working please keep the current water level between the min and max water the handle, and then it can work in any water level. - Remove the dirty from the bottom of your aquarium effectively.Specification: - Type: Aquarium Battery Cleaner - Material: Plastic. - Battery: 2 x C Batteries (Not Included) - Shortest: 56cm/22.04 inch - longest: 82 cm/32 inch - Water Changing Tube Length: approx.75cm/29.5 inch - Suitable Water Level: The Lowest Water Level (Single Sand Filter Head) is 11cm - Extension tube: 40cm / 15.8 inch - Extension tube: 15cm / 5.9 inchPackage Includes:1 Piece Aquarium Battery Cleaner1 Piece Filter Mesh Bag1 Piece Siphon