hth® stabilizer, 1.81kg.

  • Prevents chlorine loss due to intense sunlight
  • Raises cyanuric acid levels in water
  • Compatible with salt water systems

Application Instructions:

Before adding this product to your pool
1. Clean and backwash the filter.
2. Adjust free available chlorine level to 1-3 parts per million (ppm) with an hth® chlorinating product. Follow label directions on that product.
3. Measure the stabilizer (cyanuric acid) concentration with an hth® test kit or test strips. 
4. Calculate the correct amount of this product to maintain the Stabilizer in the ideal range of 20 -50 ppm.

Chlorine is not as effective if the stabilizer range is above 100 parts per million (ppm).

How to add this product to your pool
1. Turn on the circulation pump.
2. Add 250g of this product per 10,000L of pool water through the skimmer.
3. Leave the circulation pump running and do not backwash for 48 hours.

How to maintain the correct stabilizer concentration
1. Check the stabilizer level at least twice during each swimming season.
2. Add this product as needed.


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™ App

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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