Freshwater™ pH / Alkalinity DOWN 1.5 lbs. - Alkalinity and pH Decreaser Hot Spring Cold Plunge filter Height: 10 3/4"

Height: 10 3/4"

Measures phosphates from 0 ppb to 2500 ppb (parts per billion)

This filter fits the following Endless Pools Swim Spa models:

At least every 3 months

Freshwater™ pH / Alkalinity DOWN 1.5 lbs. - Alkalinity and pH Decreaser Hot Spring Cold Plunge filter Height: 10 3/4"Freshwater pH Alkalinity Down lowers the total alkalinity levels and the pH in your spa water to increase the effectiveness of your sanitizer as well as reduce the chance of equipment corrosion. Active Ingredient: 95% Sodium Bisulfate Size: 1. 5 lbs. Freshwater pH Alkalinity Down is compatible with all spa water sanitization systems including: silver ion granulated chlorine systems, salt systems, Frog @Ease, Frog Serene, granulated bromine, bromine