1.5 kg pH Minus Reducer Granules for Hot Tubs, Above Ground and Paddling Pools, pH Level Decreaser for Spa and Pool Water Bal
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
SHATCHI 1.5 kg pH Minus Reducer Granules for is one of the 49 pools, hot tubs & supplies products in our catalogue, tracked on rating, review volume and live price. The maker describes it as follows: REDUCE pH LEVEL Quickly and efficiently reduces water pH level to the optimal range of 7.2-7.6, keeping your pool, spa or hot tub safe and ready to use. PROTECT AGAINST IRRITATION Keeps water pH level within a safe range to protect against red-eye and skin irritation for an optimal swimming and bathing experience. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.7 out of 5 from 199 ratings. What that score is worth next to its rivals is set out below.
- Brand
- SHATCHI
- Amazon rating
- 4.7 / 5 from 199 ratings
- vs Pools, Hot Tubs & Supplies
- 0.2 above the category median of 4.5
- Rank in category
- 22 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 4.7, 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 199 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
- REDUCE pH LEVEL➡ Quickly and efficiently reduces water pH level to the optimal range of 7.2-7.6, keeping your pool, spa or hot tub safe and ready to use.
- PROTECT AGAINST IRRITATION➡ Keeps water pH level within a safe range to protect against red-eye and skin irritation for an optimal swimming and bathing experience. Prevents the buildup of scale due to alkaline pH level and preserves pool, spa and hot tub surfaces and equipment helping to reduce maintenance and increase their lifespan.
- HIGHLY EFFECTIVE➡ By maintaining water pH level within the optimal range it ensures the effectiveness of chlorine allowing for proper sanitisation and disinfection of water.
- EASY TO USE➡ Instructions are clearly stated on the bottle and it’s very simple to use- simply dissolve the recommended amount of pH chemicals in warm water and add the solution to the pool, reduce its pH level- check after a minimum of 4 hours
- PACKAGE INCLUDES➡ 1.5 Kg pH Minus granules suitable for all hot tub spas and swimming pools
