Water Filtration Periods
Periods Required
The Effect of the Ambient Temperature:
The safe periods of time that a filtration system should be run for is dependent on the water temperature, as shown in the following table.
Water Temperature |
Daily hours that pump should be run |
| 0 - 10°C | None |
| 10 - 15°C | 2 hours when the pool can be polluted (no cover) and 1 hour otherwise |
| 15 - 20°C | Whole pool volume / flow rate |
| > 20°C | Whole pool volume / flow rate x 1.5 + 1 hour for every extra °C |
| > 25°C | Whole pool volume / flow rate x 2 with a minimum of 12 hours |
Influence of Bathers
To calculate the influence of bathers using the pool on the required filtration periods just multiply the number of bathers x 2 and divide by the flow rate.
For example, 6 bathers in a pool with a flow rate of 12 m3/h will require an extra 2 x 6 / 12 = 1 hour of filtration.
Number of Bathers allowed:
The above rule allows the number of bathers that can use a swimming pool to be calculated: