Internal Filter for Aquarium, Submersible Aquarium Filter for 5-12gallon Fish Tank and Turtle Tank with Triangle Shape Design Adjustable Water Flow and Replacement Cartridge

【Triangle Shape Design】: This corner filter is with triangle shape design. This aquarium internal filter can be easily placed in the corners by four strong suction cups to save the aquarium space and make the aquarium look more beautiful.

【Three Stage Filtration】: The replaceable filter cartridge provides good pre-filtration as the dense dual-sided mesh catches debris and fish waste, the Ultra-activated carbon inside the mesh removes odors and discoloration. The bio sponge provides efficient mechanical filtration. The ceramic rings provide large surface for growth of beneficial bacteria, which degrades harmful impurities and help maintain the ecological environment.

【Three Water Flow Features】: When the fish tank filter is placed a little above water, connecting the flat nozzle outlet or spray tube can make different waterfall features. When the fish filter is fully submerged in water with air tube connected, you can see air bubbles are made, oxygen is aerated into tank. Rotating the air flow valve can adjust the incoming air rate.

【Adjustable Water Flow and Direction】: Water outlet can be moved to adjust the water flow direction from side to side, rotating the flow adjusting knob can easily control the water flow from gentle to strong.

【Quiet and Easy Maintenance】: The low noise air pump not only provides good filtration but also keeps the environment quiet. Meanwhile this filter for fish tank is quite easy to get maintenance. For the reusable bio sponge, you just need to clean it every 2-4 weeks. It is suggested to change the filter cartridge every 2-4 weeks to get optimal performance.