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pH |
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pH pH is a measure of how acidic or how alkaline (not to be confused with total alkalinity) the water is. As you can see from the diagram below the pH scale is 0 to 14, with 0 being very acidic and 14 very alkaline. pH 7 is neutral and for pools the pH should be maintained between 7.2 and 7.6, this being slightly alkaline protects the pool and plantroom equipment from aggressive, corrosive water and is comfortable for bathers.
Problems Associated with Incorrect pH
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pH Below 7.2
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pH Above 7.6
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- Corrosive water
- Etching of surfaces
- Staining
- Skin & eye irriration
- Damage to plantroom equipment
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- Scale formation
- Filter calcification
- Cloudy water
- Dry skin
- Reduced effectiveness of chlorine
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If the pH of your pool water is either low or high it should be corrected using Blue Horizons pH Plus or Blue Horizons pH Minus, the following table will help you calculate the dose rate to suit your pool:
pH Plus & pH Minus Dose Rates Table
| Pool Volume |
pH Plus
(to increase pH) |
pH Minus
(to lower pH) |
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| Cubic Metres |
Litres |
Gallons |
Dose Rate |
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Dose Rate |
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| 4.55 M3 |
4,545 |
1,000 |
50g |
Re-check pH
after 24 hours
& repeat dose
if required
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50g |
Re-check pH
after 24 hours
& repeat dose
if required
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| 11.36 M3 |
11,364 |
2,500 |
125g |
125g |
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| 22.73 M3 |
22,727 |
5,000 |
250g |
250g |
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| 45.45 M3 |
45,455 |
10,000 |
500g |
500g |
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| 68.18M3 |
68,182 |
15,000 |
750g |
750g |
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