(1 PACK 500g) AQUARIUM POND FILTER MEDIA CERAMIC BIO RINGS BACTERIA BALLS

500g AQUARIUM POND FILTER MEDIA CERAMIC BIO RINGS BACTERIA BALLS. Details: 12-1 500g FILTER MEDIA CERAMIC BIO RINGS BACTERIA BALLS included Bacterial house+bacterial ball+hexagonal ceramic ring+glass ceramic ring+nanotechnology ring+volcanic stone+breathing ring+ceramic biobead+medical stone+ammonia stone+biosphere+activated carbon. 500g LAVA ROCK VOLCANO RINGS STONE Full of rich variety of natural elements and essential minerals and trace elements. Encourages growth of biological colonies and holds large amounts of good bacteria. Great help to restore the natural water quality, and provide the most suitable living environment for your fishes). 500g BACTERIA HOUSE GLASS CERAMIC RING Ceramic ring is a filter medium with a large, maximum porous surface area of perfect size to produce potent growth of bacteria inside and outside the surface. It serves as a breeding ground for good bacteria that decompose toxins such as ammonia due to fish feces, fish food remains and thus the quality of p