Clearwater Chlorine Granules for Hot Tub Spa and Swimming Pool Water Treatment for Rapid Disinfecting and Cleaning, 1 kg
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
Clearwater Chlorine Granules for Hot Tub Spa and sits in our pools, hot tubs & supplies listings, where we rank by how buyers actually rate a product rather than by brand. The manufacturer says: With these stabilised chlorine granules - free active chlorine (FAC) to maintain a healthy swimming environment. So your spa or pool water stays hygienic and healthy. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.8 out of 5 from 292 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Clearwater
- Amazon rating
- 4.8 / 5 from 292 ratings
- vs Pools, Hot Tubs & Supplies
- 0.3 above the category median of 4.5
- Rank in category
- 17 of 49 rated pools, hot tubs & supplies we track
- Price position
- Among the cheaper options (category spans £4.99 to £26.99)
- How proven
- Fewer ratings than most rivals here, so less settled
How it compares in Pools, Hot Tubs & Supplies
Across the 49 rated pools, hot tubs & supplies products we track, the typical score is 4.5 out of 5. This one sits at 4.8, which puts it in the upper quarter of the category rather than level with it. Where almost everything is rated well, the gap at the top is small in points and large in practice.
It carries 292 ratings against a category median of 1,068. That is a thin base by the standards of this category, so treat the score as provisional: a handful of extra reviews can still move it either way.
On price it sits in the lower third of a category running from £4.99 to £26.99, where the midpoint is about £14.99. Cheaper than most while rating at or above the category norm is the combination worth looking for, and it is the main argument for this one.
Worked out from the 49 pools, hot tubs & supplies products in our catalogue, not from the brand's own claims. How we rank →
Key features
- DISINFECT POOL AND HOT TUB WATER: with these stabilised chlorine granules - free active chlorine (FAC) to maintain a healthy swimming environment
- KILL BACTERIA AND ELIMINATE HARMFUL ORGANISMS: so your spa or pool water stays hygienic and healthy
- FAST DISSOLVING GRANULES: get to work instantly - no more waiting around for hours for tablets to dissolve
- STABILISE CHLORINE LEVELS: to help ensure your water chlorine level stays between 1-3 mg/litre (ppm) for pools and 3-5 mg/Litre (ppm) for hot tubs
- EASY TO FOLLOW INSTRUCTIONS: included with the granules help you select the correct amount to apply for the desired increase in chlorine level
