Pool Product Calculator
Enter your pool water volume — or let us work it out from your pool's measurements — and see exactly how much of each Pool Shark chemical your pool needs.
Already know your pool volume?
Enter it in litres and jump straight to your dosage chart.
Work out your pool volume
Pick the shape that matches your pool, fill in the measurements, and hit calculate.
Rectangular Pool
Circular Pool
Oval Pool
Suggested quantities for your pool
Scaled from Pool Shark's recommended dose rates per 1,00,000 litres. Always test your water first — the actual requirement varies with bather load, sunlight, rainfall and your starting chemistry.
Supreme 90 Granules
Supreme 90 Tablets
Hyper Shock
Algistat
Water Clarifier 2050
Water Clarifier 4750
pH Up / pH Down
pH correction for your pool
Test your pH, find your current reading, and dose towards the ideal band of 7.2 – 7.6. Add one step at a time, never the full amount at once.
pH Up
Raises low / acidic pH · about 1–1.2 kg per 1,00,000 L for each 0.2 step
| Current pH | Target | Steps | Approx. total |
|---|---|---|---|
| 6.6 | 7.2 – 7.6 | — | — |
| 6.8 | 7.2 – 7.6 | — | — |
| 7.0 | 7.2 – 7.6 | — | — |
| 7.2 | 7.2 – 7.6 | — | — |
pH Down
Lowers high / alkaline pH · about 1–1.5 kg per 1,00,000 L for each 0.2 step
| Current pH | Target | Steps | Approx. total |
|---|---|---|---|
| 8.5 | 7.2 – 7.6 | — | — |
| 8.2 | 7.2 – 7.6 | — | — |
| 8.0 | 7.2 – 7.6 | — | — |
| 7.8 | 7.2 – 7.6 | — | — |
Dose in steps, never in one go. Add one step, run the filter for 2–4 hours, then re-test before adding more. Never mix Supreme 90 (TCCA) with Hyper Shock (calcium hypochlorite) or with any acid — always add each product to the pool separately.
How we calculate. Volume = surface area × average depth, where average depth = (minimum depth + maximum depth) ÷ 2. Rectangular: A × B × depth. Circular: π × r² × depth. Oval: π × (A÷2) × (B÷2) × depth. Pools with sloping sides are reduced by 13% (× 0.87). Cubic feet convert at 28.3168 litres per ft³, cubic metres at 1,000 litres per m³.
