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100g/250g Porous Biochemical Ball Filter Media Nitrifying Bacteria House Aquarium Filter Accessories For Fish Tank Water Cleaning
Features:
1, Made of natural materials such as volcanic stone.
2, Full of rich variety of natural elements and essential minerals and trace elements.
3, PH Neutral. Great help to restore the natural water quality, and provide the most suitable living environment for your fishes.
4, Won't dirt water, absorb ammonia, and other toxic substances in water.
5, Porous design, will be good for Microbial reproduction.
6, Long life time. The little holes are not easy to be blocked.
Specification:
Material: Natural material such as volcanic stone
Color: Grey
Size: about 2.5cmx2cm
Including:
100g/250g Bio Balls Filter Media Porous Particles Aquarium Filter.
