Phosphate Test – test strips allows the user to receive accurate results in just 15 seconds. The formula is designed for stable color development to allow adequate time for the user to match very distinct colors. Phosphate test strip measures from 0 to 2500 ppb.
Since 2021 many medium to smaller sized cities have started treating city water with phosphates, sometimes as high as 3,500 PPB.
Phosphates in hot tub water water should be under 300 PPB.
Phosphates in hot tub water are food for algae and algae makes it difficult to keep your free bromine/chlorine levels in range.
Phosphate reducers available here: Free and Klear or PhosKlear 4000
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