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Winner is: karl_nico

Ticket number: 14 Answer: In a shower filter



About This Competition

Bacteria home is a high-quality filter medium that is made from mineral rock. This porous rock is baked at a very high temperature. It is ideally suited for a bakki shower, but can also be used in other filters.

The microscopic pores immediately ensure a rapid growth of high concentrations of bacteria, which greatly improves the water quality. The bacteria filter harmful substances such as nitrate, nitrite and ammonia from the water.

The material is very porous and slightly rough on the surface, so that the water that is sprayed over it is, as it were, polished. Because colonies of anaerobic (low-oxygen) bacteria can nest in the pores of this filter media, which take care of the conversion of nitrate to nitrogen gas, you could prefer this type of filter media to non-porous filter media.

Two types of bacteria are involved in the aerobic (oxygen-rich) conversion. The Nitrosomonas bacterium converts ammonia into nitrite and the Nitrobacter bacterium then converts nitrite into nitrate. Although nitrate does not immediately pose a health risk to fish, high doses are not desirable. High nitrate levels promote strong algae growth; this mainly occurs in the spring because the bacteria have not yet multiplied sufficiently.