Product Features Multi-filtration functions This double sponge fish tank water filter integrated bio-filtration, oxygenation, and physical filtration in one place. It also makes small water flow which can ensure the excellence of the water quality. More efficient and durable Hygger fish tank filter with double sponges means more surface area for beneficial bacteria filtering the aquarium water crystal clear. It can also remove the peculiar smell. Super quiet and more delicate bubbles Hidden outlet design; Lower noise; More delicate bubbles. Directions for Use All the parts of this fish tank water filter are detachable. You can easily assemble them together. You can stick the filter firmly to any tank position under water with the strong suction cup. The water outlet tube can be extended and rotated, you can adjust the outlet to above or below the waterline. Step 1: Open the ceramic pearls package.Step 2: Rinse two sponges, the ceramic pearls, and all parts with clean water from tank. Then soak the two sponges and ceramic pearls in tank water for 10 minutes.Step 3: Divide the ceramic pearls in half and pour into the two ceramic pearls containers.Step 4: Secure the lid to the ceramic pearls container and secure the two sponges to the filter.Step 5: Install he retractable outlet pipe on the T-connector.Step 6: Place the filter on the back wall of the aquarium with two suction cups. Make sure the double sponge filter is oriented vertically, otherwise the pipe will be blocked by the ceramic pears.Step 7: Connect the filter to air pump with an air tube. The air tube should be equipped with a check valve to prevent flow-back of water during power failure.Step 8: Make sure all the connections firm. Specifications Brand: Hygger Size: Small Sponge Dimensions: 1.97" D x 4.33" H Inner Diameter of Sponge: 0.51" Applicable Tank: 10 - 40 Gallons Applicable Air Pump: 2.5W Air Tube: 4mm Retractable Outlet Pipe Length: 6.1 - 9.25" Capacity of Ceramic Pearls Container: 100ml
