Aquarium-NitrogenCycle

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Own work based on: Aquarium-NitrogenCycle.png

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https://www.dkwiki.dk/b/c189

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Nitrogen Cycle in aquariums. Legend: (1) Addition of food and nutrients, (2) Production of Urea and Ammonia by Fish, (3) Ammonia is converted to Nitrites by beneficial Nitrosomonas bacteria, (4) Nitrites are converted to Nitrates by beneficial Nitrospira bacteria. Less toxic Nitrates are removed by plants and periodic water changes. (5) Evaporation. (6) Light, (7) Soil, (8) O₂ produced by plants, (9) CO₂ produced by Fish

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