100 Pcs 16mm Aquarium Filter Balls Biochemical Cotton Filter Media Purification and Degradation of Toxic and Harmful Substances in Water for Filtering Aquariums

Function: Great help to restore the natural water quality and provide fish with the most suitable living environment. Suitable for UVC filters, external filters or filter basins in the aquarium or pond.

How it works: When the water flows inside, the time is increased by using the nitrifying bacteria to achieve the effect of biochemical filtration. Pond filter balls do not need to be replaced unless they are damaged or destroyed.

With macro surface of bio balls: strengthen the effect of bacterial filtering, light and easy to carry. The filter balls provide a large surface area for bacteria and thus achieve very high efficiency for natural biological filtration.

High quality: Aquarium Bio Filter Balls, which are excellent for oxygenating your water and helping the gas exchange process. Ideal for any freshwater or saltwater aquarium or mini reef tank.

Wide Application: Our biochemical filter balls can be used not only in seawater biochemical filtration systems, but also in freshwater biochemical filtration systems, ideal for use in aquariums, fish tanks and aquariums.