Upettools Automatic Vacuum Gravel Cleaner Pump Multi-Function: Automatic Water Changer + Sand Washer + Debris Cleaning + Water Filter + Water Shower + Water Flow Powerful Vacuum: Power Enough To Change Water, Suck Out Debris And Fish Waste Out Of Aquarium Quickly Extension Handle: You Can Choose The Number Of Extension Tube To Suit The Depth Of The Aquarium (Extension Tube A4) Easy To Assemble: Quick Assemble In Just Few Minutesupettools Automatic Vacuum Gravel Cleaner Pump Multi-Function: Automatic Water Changer + Sand Washer + Debris Cleaning + Water Filter + Water Shower + Water Flow Powerful Vacuum: Power Enough To Change Water, Suck Out Debris And Fish Waste Out Of Aquarium Quickly Extension Handle: You Can Choose The Number Of Extension Tube To Suit The Depth Of The Aquarium (Extension Tube A4) Easy To Assemble: Quick Assemble In Just Few Minutes Package Included: 1X Mini Electric Fish Tank Cleaner Changer (Complete): 1Xwater Pump 4Xextension Tube 1Xsand Washer 1Xwashing Sand Head 1Xfilter Bag 1Xdusk Shape Suction 1Xlow Suction Base 1Xcleaning Brush 1X52Ft Water Pipe 1Xelbov Shower 1Xpower Switch 4 Suction Cups 1Xuser Manual Whats Questions About This Electric Aquarium Gravel Vacuum Cleaner Why Does This Aquarium Gravel Vacuum Not Work Or Stop Working 1The Correct Use Is Put The Pump In The Water Then Power On, Otherwise The Pump Will Not Be Started If You Have First Powered On And Then Put The Pump In The Water, The Pump Will Stop Working For Few Seconds, Please Turn On And Off Repeatedly To Exhaust The Air Of The Pump, Then Everything Back To Normal 2Please Make Sure The Power Socket Has Electricity And The Two Wires Are Connected Normally Why The Power Is Not Strong After Using For A Period Our Motor Is Easy To Disassemble And Can Be Opened For Cleaning Aquarium Vacuum Gravel Cleaner Electric