Package Included hygger Fish Tank Cleaner Kit 1 *Air-Pressing Trigger Control; 2 *Extension Inlet Tube; 1 *Extension Tube Connector; 1 *Water Flow Clamp ; 1 *Duckbill Suction Inlet(Debris Vacuum); 1 *User Manual; 1 *Fixture Clamp; 1 *Outlet Hose 1 * Fish Net; 1 *Clean Brush; 1 *Handle Rod; GRAVEL VACUUM ACCESSORIES Outlet Hose 79in high-quality PVC material hose, 0.7in outer diameter, 0.6in inner diameter, and the water hose can be cut according to demand. Fixture Clamp Fixture clamp, avoid loose water pipes and water flowing out, freely fix, free your hands. Hose Clip Water Flow Control, easily adjust water flow(can be used according to your needs). Extension Tubes According to the size of the fish tank, you can use 1 extension tube or two. It can be extended from 16in to 34in. HOW TO OPERATE GRAVEL & SAND WASHING First Step Connect the outlet hose and inlet tube. Second Step Press the trigger. Third Step Get the gravel to tube(not too much); Move left and right to clean; Lift up and down to replace gravel; Wash in this way all the time. Fourth Step The impurities on the gravel flow out through the outlet hose with the water flow. OTHER ACCESSORIES Installation Step 1 Align the rod with the slot on the accessory head and insert it (marked with an arrow), then Rotate the latch until it fits. Installation Step 2 Rotate the protruding part on the handle rod, insert the accessories head thin rod into the handle rod, then adjust the length, and finally tighten. Fishing Net Use The 4-inch wide, is soft and does not hurt the fish, and has a strong load-bearing capacity. Can use for cleaning up debris and floating objects. Brush Use Small soft fiber brush surface, durable, wear-resistant, but not damage the tank wall, and easily remove dirt and attachments in the fish tank wall. Brush & Net Handle The non-slip handle is designed according to ergonomics, light and flexible, and easy to use. Brush & Net Rod High-density fiber rod, light and durable, no rust, can be adjusted at any length, extending from 19.7 inch to 35.4 inch, suitable for different sizes of fish tanks. ATTENTION 1 The principle of this sand cleaner is gravity. The water outlet must be at least 19.7 inch lower than the water inlet when you use this gravel cleaner.Gravel Adjustable Length: with 2 extension tubes, It can be extended from 22.4 inch to 40.9 inch. Applied to depth below 31 inch aquariums. ATTENTION 2 Suitable for both saltwater and freshwater tanks.hygger Patented Design: This aquarium gravel & sand cleaner is the latest design with more power suction power to provide a better user experience. The handle patented design provides a more comfortable grip. Stop working after a few uses? --First Situation THERE IS AIR 1.put the hard tube in tank 2.plug the other end of the hose outlet with your hand 3.press, after about 5 to 10 times, release the hand from the hose, the air stored in the interior decreases 4.start using it normally, it works Stop working after a few uses? --Second Situation Very fine sand and hard impurities are blocked inside. Remove the screws of the controller and check whether the inside is blocked. Stop working after a few uses? --Third Situation For quality problems caused by individual production, please find us for after-sales service.