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Puerto Verde's liquid pH- reducer for pools and spas is a ready-to-use product that quickly and effectively lowers the water's pH when it rises above the optimal range. As a liquid, it can be diluted and applied without waiting for it to dissolve, making it especially convenient for quick corrections. Maintaining the pH between 7.2 and 7.6 is essential for chlorine to work effectively, to prevent skin and eye irritation, and to protect the pool's lining and equipment.
What is the liquid pH- reducer and what is it used for?
Pool water pH is measured on a scale from 0 to 14. A pH of 7.0 is neutral; below that it is acidic, and above that it is alkaline. The optimal range for pool use is between 7.2 and 7.6. When the pH rises above 7.6, the water becomes too alkaline, which drastically reduces chlorine's disinfecting effectiveness, promotes scale formation, and can leave the water cloudy.
The liquid pH- reducer neutralizes this excess alkalinity and quickly returns the water to the correct range. Since it comes in liquid form, it does not need to be dissolved beforehand: simply dilute it in a bucket of water and pour it directly around the perimeter of the pool.
Pool water pH range, from most acidic (left) to most alkaline (right)
When do you need to lower your pool's pH?
- The pH test shows more than 7.6 using test strips or a photometer
- The chlorine loses effectiveness even though you dose it normally
- The water has a cloudy or milky appearance for no apparent reason
- Limescale deposits appear on the walls, waterline, or equipment
- After using too much pH+ or alkalinity increaser
- After filling with new water from the mains, which is usually alkaline
- If you have gone more than a week without checking the water's pH
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Advantages of Puerto Verde's liquid pH- reducer
Liquid pH- reducer vs. pH reducer in powder or granules
| Feature | Liquid pH- Reducer | pH Reducer in Powder/Granules |
|---|---|---|
| Preparation | ✓ Ready to dilute, no prior dissolving | ✗ Requires thorough dissolving before pouring |
| Speed of action | ✓ 2–4 hours | Variable, depending on dissolution |
| Risk of lumps/residue | ✓ No | ✗ Possible if not thoroughly dissolved |
| Ease of dosing | ✓ Measured in ml | Measured in grams |
| Biodegradable | ✓ Yes | Depends on the product |
How to apply the liquid pH- reducer step by step
- Measure the current pH: Use test strips, a liquid test kit, or a digital photometer to find out how much you need to lower it.
- Calculate the dose: As a reference, 200 ml for every 10 m³ of water lowers the pH by 0.2 units (or an equivalent proportion). Use the pH and alkalinity calculator to get the exact ml according to your pool's volume.
- Dilute the product: Pour the required dose into a bucket with water and stir to dilute the solution thoroughly.
- Apply with the pump running: With the recirculation system running and no one swimming in the water, pour the diluted solution around the entire perimeter of the pool.
- Leave to work: Wait between 2 and 4 hours, depending on the size of the pool, for the product to distribute evenly.
- Measure the pH again: Check the new value. If the desired level has not yet been reached, repeat the process until it is.
Approximate dosage of liquid pH- reducer by volume and required reduction
The indicated dosages are approximate for lowering the pH by approximately 0.2 units (200 ml for every 10 m³). For larger reductions, calculate by multiplying or use the calculator.
| Pool volume | 0.2 unit reduction | 0.5 unit reduction | 1.0 unit reduction |
|---|---|---|---|
| 20 m³ | 400 ml | 1,000 ml | 2,000 ml |
| 32 m³ | 640 ml | 1,600 ml | 3,200 ml |
| 50 m³ | 1,000 ml | 2,500 ml | 5,000 ml |
| 64 m³ | 1,280 ml | 3,200 ml | 6,400 ml |
| 80 m³ | 1,600 ml | 4,000 ml | 8,000 ml |
Actual values may vary depending on total alkalinity, temperature, and water hardness. Always use the pH and alkalinity calculator for greater precision.
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Frequently asked questions about the liquid pH- reducer
How long does it take to lower the pH after applying it?
Can I swim while the pH- reducer is being applied?
What is the difference between the liquid pH- reducer and the pH+ increaser?
Can I mix the pH- reducer with other products?
What happens if I overdose and the pH drops too low?
How often should the pH be checked?
Where can I buy the liquid pH- reducer online in Spain?
Not sure how much pH- reducer you need?
Enter your pool's volume and the current pH, and we will calculate the exact dose instantly.
