Blue Horizons Small Chlorine 20g Tablets - Tub of 5 KG

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These Blue Horizons chlorine tablets are designed to slowly erode over a period of 3-5 days, depending on the water flowing over them.
As they release chlorine relatively slowly it may be necessary to shock dose or oxidise prior to their first establish some chlorine more rapidly.
Ideal chlorine levels are between 1-3 mg/l (ppm) as tested by a test kit.
Prior to using this product, adjust the pH levels to the ideal range of 7.2-7.6.

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