Features : 1- Innovative design , quick and easy operation 2- Flow control valve attached 3- Integrated gravel/ fish strainer 4- Water tube included
5- Total length: 190cm Usages ; 1- Put gravel vacuum cleaner into aquarium 2 - Place other side of hose into a bucket 3- Open flow control valve 4- Move the cylinder up and down rapidly until a siphon is caused 5- Remove fish wastes and debris by lowering gravel vacuum on gravel 6- Adjust flow control valve as needed for different sizes of aquarium