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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
before or after heavy swimmer use
Protects plumbing and equipment
® is a must for new pool startups
Will not clog feeders
Haviland Hardness Plus Size:5 LB before or after heavy swimmerIncreases calcium hardness levels in pool water. Proper calcium levels protects pool surfaces and equipment. FEATURES Raises calcium hardness Pure flakes eliminate potential clouding in water BENEFITS Prevents long term damage to vital pool components Easy application APPLICATIONS Ideal calcium hardness levels should be maintained between 200 400 ppm Avoid increasing hardness more than 50 ppm every couple hours. Easy to use chart on packaging