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Chlorine Stabiliser (cyanuric acid) protects pool chlorine in outdoor pools and reduces wasteful loss of sanitiser to sunlight. Ideal for pools on stabiliser free chlorines. 3 Kg

1. Take a cyanuric acid reading using your test kit. If the reading is below 30mg/l (ppm) you will need to add Fi-Clor Chlorine Stabiliser as above. 
2. The Chlorine Stabiliser can take a few days to dissolve. During this period assist dissolution by sweeping any accumulated product with a pool brush keeping filters running. Do not backwash. 
3. When filling a pool, a single dose of 1.5kg of Chlorine Stabiliser should be added during or immediately after filling the pool.