The sediment will fall very good, if the PH is É 7.4 - 7.6 PPM applied chemicals, chemical, water volume number), chlorine 90% (TRICHLORO ISOCYANURIT. ACID 90%) 100 queue 200 grams soda ash (SODIUMCARRBONATE) 100 queue, 3 000 g. hydrochloric acid (HYDROCHOL ACID 35%) 100 queue, 1 000 grams. Alum (ALUM) 40 queue 500 grams.
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