BAYROL pH-Minus – fast-dissolving acidic granules designed to reduce the pH of swimming pool water when it exceeds 7.4. Maintaining the correct pH level is essential for effective disinfection and proper water balance. The product is made from high-purity sodium bisulfate, dissolves quickly, does not cloud the water and is compatible with all pool water disinfection methods.
Key features
- Fast-dissolving acidic granules.
- Designed to reduce the pH when it exceeds 7.4.
- Made from high-purity sodium bisulfate.
- Quickly and accurately adjusts the pool water pH.
- Does not cloud the pool water.
- Compatible with all pool water disinfection methods, including chlorine, bromine and active oxygen.
- Suitable for all types of filtration systems.
- Suitable for all types of swimming pools.
- Includes a dosing scoop for more accurate dosing.
When to use?
- When the pool water pH exceeds 7.4.
- After topping up the pool with fresh water.
- After heavy rainfall.
- During regular water testing, whenever the pH needs to be reduced to the recommended range of 7.0–7.4.
Dosage
Recommended dosage:
- 100 g per 10 m³ of water lowers the pH by approximately 0.1.
Hard water may require a higher dosage.
Instructions for use
- Check the pool water pH at least twice a week, as well as after topping up the pool and after heavy rainfall.
- If the pH exceeds 7.4, calculate the required amount of product.
- Switch on the filtration system.
- Distribute the granules evenly and directly into the pool water in several locations, preferably in front of the return inlet nozzles, or dissolve them first in a plastic bucket filled with water.
- Do not add the product directly into the skimmer.
- Leave the filtration system running for 2–3 hours after dosing, then measure the pH again and adjust it if necessary.
- Do not add more than 300 g per 10 m³ of water in a single application.
Compatibility
- Suitable for all types of pool filtration systems.
- Compatible with all pool water disinfection methods.
- Suitable for all types of pool surfaces, including PVC liners, tiles and polyester pools.
- Suitable for use in both indoor and outdoor swimming pools.
Pack size
- 1.5 kg
Active substance
- Sodium bisulfate
Warning!
Use pool chemicals safely. Always read the product label and instructions for use before application. Never mix different pool chemicals in concentrated form. Always add the product to the water and never pour water onto the product. Do not exceed a dosage of 300 g per 10 m³ in a single application.









































