Enhance aquarium filtration with large-capacity, 8-stage canister filters. The cartridge filter has a larger media storage capacity, so the aquarium water will be exposed to more filter media during its initial passage. Advanced, high-performance features help ensure high water quality and quick and easy daily filter maintenance. Remove organic film and debris from water surface. Easy to disassemble and clean. The water will be not clear at once for the first time to use,you need to wait for 1-2 days patiently,then all the impurity or dirty things will be filtered out.Hope you can understand. 1) Open the fixing buckle of the lid and pick up the lid 2) Take out the filter material basket and add the cleaned filter material 3) Put back the fiter material basket, cover the lid and buckle the fixing buckle 4) Connect the hose to the water outlet and water inlet,and rotate the nut to fix it 5) Add water to the fish tank until the distance between the water surface and the edge of the fish tank is less than 12cm, and the outer barrel of the fish tank is 40cm below the water surface 6) Connect the outlet pipe and inlet pipe to the other end of the hose and fix them in the fish tank 7) Make sure that the flow rate is adjusted to the maximum 8) Pull the handle up and down 2-4 times to suck water into the bucket SF-650F-171GPH SF-850F-UV-225GPH SF-1000F-UV-266GPH SF-1200F-UV- 317GPH SF-1500F-UV -397GPH Buying Options Buying Options Buying Options Buying Options Add to Cart Customer Reviews 3.8 out of 5 stars 518 3.8 out of 5 stars 518 3.8 out of 5 stars 518 3.8 out of 5 stars 518 3.8 out of 5 stars 518 Price — no data — no data — no data — no data $134.99$134.99 SIZE (inch) 7*7*11.5 7*7*13.4 7*7*15.8 8.3*8.3*15.8 8.3*8.3*18.5 Power 8W 9W 10W 13.5W 15W UV-Power X 7W 9W 9W 9W Water flow rate 650 L/H = 171 GPH 850 L/H = 225 GPH 1000 L/H = 266 GPH 1200 L/H = 317 GPH 1500 L/H = 397 GPH Suitable fish tank size 48 inches(80-130 gallons) Power cord length 1.2m 1.2m 1.2m 1.3m 1.3m 2 Elbow Joints Diameter 17.5MM Diameter 17.5MM Diameter 17.5MM Diameter 17.5MM Diameter 17.5MM 2 Inlet And Outlet Pipes Length 1.1m, Inner Diameter 16mm Length 1.2m, Inner Diameter 16mm Length 1.2m, Inner Diameter 16mm Length 1.5m, Inner Diameter 16mm Length 1.5m, Inner Diameter 16mm Filter box 1 2 3 2 3 QUIET ✓ ✓ ✓ ✓ ✓ SF-1800F-UV-480GPH F-2200F-UV-580GPH Add to Cart Buying Options Customer Reviews 3.8 out of 5 stars 518 3.8 out of 5 stars 518 Price $135.99$135.99 — no data SIZE (inch) 8.3*8.3*20.5 8.3*8.3*22.5 Power 18W 20W UV-Power 9W 9W Water flow rate 1800 L/H = 480 GPH 2200 L/H = 580 GPH Suitable fish tank size < 56 inches < 56 inches 2 Elbow Joints Diameter 17.5MM Diameter 17.5MM Power cord Length 1.3M 1.3M Filter box 3 3 QUIET ✓ ✓