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1 oz until alkalinity reading is 80-120 ppm
1 FROG ease in-line mineral cartridge for hot tubs
Controls cloudy water
Improves water clarity
Natural Chemistry - Phosfree (2 Liter) Pool & Spa Supplies 1 oz until alkalinity readingNatural Chemistry's Phosfree enables pool owners to drop phosphate levels in your pool to almost nothing. Phosfree is unconditionally guaranteed by Natural Chemistry to prevent future phosphate build up. This treatment will improve filter performance and reduce overall pool maintenance, yet accomplishes these things without resorting to the usage of harsh chemicals, remaining 100% non toxic. Dosage16 fl oz per 10,000 gallons per 300 ppb of phosphates.