Craftsboys Fish Tank Filter, Silent Internal Aquarium Filter

About this item

• Biochemical Filtration: This fish tank filter includes a box with biochemical cotton that collects and filters waste, creates waves and circular water flow, and helps cultivate beneficial bacteria, ensuring a healthy environment for your fish and turtles. The cotton is washable and reusable.

• Increases Oxygen: The air inlet boosts the oxygen level of the filtered water, keeping fish active and supporting beneficial bacteria like nitrifying bacteria. Oxygen supply can be adjusted via the valve, which should remain outside the tank and in contact with air.

• Ultra Quiet Operation: Equipped with a premium pump motor operating at only 35 dB, it runs nearly silently. For nighttime, turning off the air inlet reduces noise further without affecting filtration.

• Easy to Clean: The biochemical cotton can be easily removed and washed, or replaced with other filter media. Customer support is available for any questions or assistance.

• Recommended Tank Size: Suitable for aquariums of 20–60 liters.