Recommended Chemical Dosage for Swimming Pool Owners
| Treatment Always follow the directions on the product label. |
Per 1,000 Gallons | Per 100 Cubic Meters | Ideal Value/Range |
|---|---|---|---|
| Chlorination Always maintain correct free chlorine residual in the water. Dose in accordance with test kit readings. |
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| Granules: To add 1 ppm chlorine. | 850gm | 1.800kg | Indoor Pools 1-2ppm |
| Tablets: Weekly requirement. (Private pools only) |
1 Tablet | 2 Tablets | Outdoor Pools 3ppm |
| Liquid: To add 1ppm chlorine. | 400ml | 850ml | 3-5ppm |
| Bromination Always maintain correct total bromine residual in the water. Adjust brominator in accordance with test kit readings |
Indoor Pools 3-5ppm Outdoor Pools 4-6ppm |
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| pH Correction | |||
| To increase pH: Add Dry Alkali daily until correct pH established. |
1lb | 1kg | 7.2-7.6 |
| To decrease pH: Add Dry Acid daily until correct pH established. |
1lb | 1kg | 7.2-7.6 |
| Total alkalinity correction | |||
| To increase: Alkalinity Increaser to add 15ppm |
3 lbs | 3 kgs | 100-150ppm |
| To decrease: Dry Acid to reduce by 15ppm |
2 lbs | 2 kgs | 100-150ppm |
| Total Dissolved Solids | |||
| To decrease: | Less than | ||
| Replace part of pool water with fresh | 1500ppm | ||
| Calcium Hardness | |||
| To increase: Calcium Chloride to raise 15ppm |
2 lbs | 2 kgs | 100-500ppm |
| To decrease: Replace part of pool water with fresh. |
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| Chlorine Stabilisation | |||
| To stabilise: Cyanuric Acid to add 30ppm |
3 lbs | 3 kgs | 20-100ppm |
| To reduce: Replace part of pool water with fresh |
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| Dechlorination Before emptying the pool or as necessary to lower chlorine residual. |
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| To dechlorinate: Neutraliser to reduce by 2 ppm |
1 llb | 1 kg | |
| To polish water. After every backwash, or as necessary to improve water quality. Add Liquid Clarifier. |
55 mls | 120 mls |
Discover the rest of our blog here at 1st Direct Pools to learn more about your swimming pool chemicals! If you need any assistance, our expert team is on hand to give you advive - simple call us or leave an email and we'll get back to you as soon as we can.

