hth® alkalinity increaser, 2.27kg

  • 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.

Application Instructions:
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.   


Testing and Balancing

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Test Your Water

How often you should test and balance your pool water can vary based on how often you use it and a number of other variables; but it’s important to remember that for chlorine and pH, you should usually test your pool two to three times a week. That may sound like a lot, but water balance is vital for your pool’s health and the health of the people who swim in it. When your pool water is out of balance, your sanitizers can be less effective, the water can cause irritation to the skin and eyes, and if the water gets imbalanced enough, it can even damage the pool’s surfaces, structure, or equipment.

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Shock Weekly

In ideal circumstances, shocking your pool just once a week will keep it looking clean and clear; but any heavy rainfall, signs of algae, use by lots of swimmers, or periods of very sunny weather can deplete free chlorine levels, which means an extra dose of hth® Shock is needed. Sundown is the optimum time to shock your pool because the chlorine can work without fighting the sun's ultraviolet rays and has more time to restore water clarity. 

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hth® Test to Swim™

The hth® Test to Swim™ water testing app is essential to spending more time splashing and less time guessing!

-Easily input your water results
-See immediate analysis & step-by-step treatment recommendations and dosing instructions for balancing your pool 
-Build pool profile with pool size calculator 
-How-to videos on everything from basic pool maintenance to specific pool problems




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