HTH™ Alkalinity Increaser

Skip to product information

Pool Calculator

Find Your Pool Size

  • Increases total alkalinity levels
  • Helps maintain proper pH levels

HTH™ Alkalinity Increaser raises total alkalinity in swimming pool water. The ideal alkalinity range is 80-120 parts per million. If the total alkalinity is too low, pH will fluctuate excessively.

Watch Video

Find a Store

How to use

HTH™ Alkalinity Increaser

Application instructions:

FOR BEST RESULTS: Keep the total alkalinity at 80-120 parts per million (ppm).
1. Measure total alkalinity of pool water with an hth® test kit or test strips.
2. To increase total alkalinity by 10 ppm, add 180g per 10,000L of pool water with filter pump running.
3. Broadcast evenly over the pool surface.
4. Allow filter water to circulate 4 hours before re-checking your level.

FOR BEST RESULTS: Keep the total alkalinity at 80-120 parts per million (ppm).
1. Measure total alkalinity of pool water with an hth® test kit or test strips.
2. To increase total alkalinity by 10 ppm, add 180g per 10,000L of pool water with filter pump running.
3. Broadcast evenly over the pool surface.
4. Allow filter water to circulate 4 hours before re-checking your level.