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BayroShock is a chlorine free, liquid product with an immediate effect against water turbidity, the growth of algae and the formation of decay. It is suitable as a shock treatment for the swimming pool, but can also be used for instance in fountains or water installations (the concentration, however, must be less than 50 ppm). It reacts quickly and decomposes without residue. It does not contain quaternary ammonium compounds or heavy metals.5 Litres.