Aqua-Guard Pool Products
HTH Duration Chlorinating Pucks (Unstabilized)
HTH Duration Chlorinating Pucks (Unstabilized)
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Chlorinating tablets that release a maintainable level of chlorine to control bacteria and algae in swimming pools. HTH Extra capsules have 65% available chlorine and are unstabilized. This product is an alternative to the standard 3″ chlorinating pucks and does not contain Cyanuric Acid. With HTH Extra Duration Pucks, you’ll have a steady source of chlorine in your swimming pool. These chlorinating tablets cannot be used in chlorinators and must sit in the skimmer basket or in a floating chlorine dispenser.
- Sanitizes and clarifies pool water
- Controls bacteria and algae
- Contains no cyanuric acid
- Will not cause over-stabilization
- Built-in stain and scale inhibitor helps maintain crystal clear pool water
Directions: Add tablets into skimmer on a weekly basis according to the table below:
Pool Volume | Duration Pucks Weekly Dosage |
---|---|
20,000 L | 1 Tablet |
40,000 L | 2 Tablets |
60,000 L | 3 Tablets |
80,000 L | 4 Tablets |
Net contents: 3.57 kg, 10 kg
SDS - Safety Data Sheet
Shipping & Returns
Shipping & Returns
Free shipping over $99 in Canada. Most orders arrive within 2-4 business days - Heat Pumps excluded.
Check out our comprehensive Shipping Policy & Return Policy
Package Contents
Package Contents
3.5 kg or 10 kg of HTH Pucks
Safe Handling Tips
Safe Handling Tips
- Check all lids, tops, etc., to make sure they are secure.
- Don’t let children handle.
- Never mix different pool chemicals.
- Do not store in damp areas or near heat.
- Never store chlorine and acid together.
We will NOT be responsible for damage caused by careless handling of pool chemicals after they are in your possession.
Pool Volume & Chemical Calculators
Pool Volume & Chemical Calculators
Try out our swimming pool volume and pool chemical dosage calculators to simplify your pool maintenance routine!



High-Quality Pool Care Systems for a Cleaner Pool.
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Free Shipping on Orders Over $99
Shipped to your door, free on orders over $99 in Canada on all products purchased from Aqua-Guard Pool Products.
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Aqua-Guard Alliance
Soft, algae-free, sparkling clear water, 24 hours a day! Made easy with our best-in-class water care system.
Great Pucks!
The delivery was fast and I am happy with the product. the only thing is the container was packed upside down and a lot of chlorine in box. when I unpacked I made a mess.