Fish live in direct and constant contact with their environment, the water. Since everything that goes into the fish (feed) also goes out of the fish (urine & feces), the environment needs to be cleaned and treated to keep the fish healthy and happy. This is of high importance for Recirculating Aquaculture Systems (RAS), where one wants to keep the amount of water exchanged as low as possible, either due to limited availability, or to improve operational sustainability.
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