pH Minus 1.6kg is a water treatment product designed to lower and stabilise the pH level in hot tubs, swimming pools, spas, and swim spas. Keeping the pH within the correct range ensures that sanitising chemicals work effectively and that the water remains comfortable and safe.
This product is ideal when water becomes too alkaline.
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✅ Key Benefits
•Lowers high pH levels
•Improves effectiveness of chlorine, bromine & oxygen
•Prevents cloudy water and scale build-up
•Protects heaters, pumps & pool surfaces
•Reduces eye and skin irritation
•Easy to dose and dissolve
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Product Information
•Form: Granules / Powder
•Pack Size: 1.6kg
•Function: pH reducer
•Application: Hot tubs & swimming pools
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Why pH Balance Is Important
•High pH (above 7.6) can cause:
•Cloudy water
•Scale formation
•Reduced sanitizer efficiency
•Eye and skin irritation
Ideal pH range:
7.2 – 7.6
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Dosage Guide
🏊 Swimming Pools
•100g per 10,000 litres lowers pH by approximately 0.2 units
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🛁 Hot Tubs / Spas
•10g per 1,000 litres lowers pH by approximately 0.2 units
💡 Always add gradually and re-test before adding more.
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How to Use
1.Dissolve the required amount of pH Minus in a bucket of warm water
2.Stir until fully dissolved
3.Pour evenly around the pool or hot tub
4.Run filtration for at least 30–60 minutes
5.Test water again and repeat if necessary
❌ Never add directly to the water without dissolving
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Important Safety Information
•Do not mix with other chemicals
•Always add chemicals separately
•Store in a cool, dry place
•Use biocides safely
•Always read the product label and instructions before use
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Suitable For
✔ Hot tubs
✔ Swimming pools
✔ Spas & swim spas
✔ Chlorine, bromine & oxygen systems
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📦 Package Size:
1.6kg pH Minus
🌐 www.hottubireland.ie
pH Minus 1.6kg – Hot Tub & Swimming Pool
Pool chemicals - use PH Minus :
Correct adjustment of the pH of pool water is a prerequisite for perfect function of the vast majority of plant and advice for creating pleasant conditions for swimming . The water in the pool and hot tubs has a pH in the range 6.8-7.6 , if this is found to be a suitable pool- tester . PH higher than 7.6 in water causes mineral opacities may become obstructed by filtration , reduces the effectiveness of disinfection , there is irritation of the eyes and skin . pH lower than 6.8 causes corrosion of metal and concrete , fading colors , eye and skin irritation . When the pH is higher than 7.6 is used to decrease the pH MINUS this preparation . Adding 80 g pH MINUS for every 10 m3 of water in the pool is reduced by about 0.1 pH . Measured amount of preparation is dissolved in a plastic bucket with water and poured into the deepest part of the pool running water circulation . After a thorough mixing of all water in the pool is carried out re- measurement of pH and the resulting index , where the entire procedure is repeated .
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