Translations:Filtre bio-sable pour eau potable/45/en

2) With time, the biological layer will adapt to a certain degree of water contamination. If a source with a different level and kind of contamination is used, the layer might not be able to consume all pathogens. The biological layer may need several days to adapt to a new kind of water: its contamination and nutrients. It is advised to systematically use the same water source to ensure the best treatment quality.