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add one pound (approximately 1 1/2 cups) of renewal per 5
Removes calcium and scale deposits
Its patented formula quickly cuts through the thickest oil
Black algae killer
Natural Chemistry - Pool Perfect (1 Liter) best hot tub shock for algae add one pound (approximately 1Natural Chemistry Pool Perfect is a concentrated natural enzyme based formula that breaks down suntan oils, cosmetics, body oils and other non living organic contaminate waste in your pool. Pool Perfect prevents black waterline rings. Just add to the water no scrubbing necessary. Water stays silky soft and odor free. Pool Perfect also acts as a continuous filter cleaner. It eliminates oils and other non living organics that clog filters and reduce