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cell cleanliness
Re-test phosphate levels
Water which has not been conditioned rapidly looses its chlorine through composition
Diameter: 5-3/8"
HTH-EXTRA Chlorine Pool Shock -15kg PAIL Chlorine cell cleanlinessHTH EXTRA HTH Extra can be used once a week to maintain sparkling blue, crystal clear water. Also used for destruction of green and black algae. FAST ACTING AND POWERFUL! 15% Stronger than regular HTH Shock! Contains 75% available chlorine. Fast dissolving, EXTRA FINE, formula is made from a patented process. Ideal for weekly shock treatments and killing algae. Calcium Hypochlorite Always test and ensure pH is between 7. 2 and 7. 6 before shocking
US$ 22.00
US$ 20.00
US$ 21.00
