Reduce your PH and Alkalinity with BioGuard® Lo n Slo

Unlike raising your PH and alkalinity where you need to use multiple chemicals, bringing down these levels can be used with a single chemical, BioGuard® Lo n Slo. This is a quick dissolving and simple to measure chemical! Lo n Slo is easier to use and safer to store rather than using a muriatic acid to bring down your pH and alkalinity levels.

lo ‘n slo – 8 lb – bottle

BioGuard® Lo n Slo


  • Lowers pH
  • Reduces total alkalinity
  • Safer to store, transport, and handle than liquid acid
  • For use in all pool types
  • Quick dissolving

Directions for Use

  1. For In Season temperatures for chlorine, bromine and SoftSwim® pools, the ideal range for total alkalinity is 125 to 150 ppm. For Mineral Springs® and saltwater pools, the ideal range is 80 – 150 ppm.
  2. If pH is above 7.6, apply Lo N Slo® as determined by ALEX® Pro, or the acid demand chart on the product label.
  3. Apply by broadcasting product into the deep end with the pump running. Add when the pool is not in use.
  4. Circulate for 2 hours and retest pH.

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