Pool Turnover Rate Calculator (Litres)
Ensure your swimming pool water stays crystal clear and sanitary.
Calculation Results
0 Hours
0
Understanding Pool Turnover Rates
The pool turnover rate is the amount of time it takes for your filtration system to process the entire volume of water in your pool exactly once. Maintaining a proper turnover rate is critical for water clarity and chemical distribution.
The Formula
Turnover Time (Hours) = Pool Volume (Litres) / Flow Rate (Litres per Hour)
Why Turnover Matters
If your turnover rate is too slow, debris and bacteria can accumulate faster than the filter can remove them. This leads to algae blooms and cloudy water. Generally, most residential pools require a turnover rate of 8 to 10 hours.
- Residential Pools: Aim for one full turnover every 8-12 hours.
- Commercial/Public Pools: Often require a turnover every 4-6 hours due to higher bather loads.
- Hot Tubs/Spas: Usually require a turnover every 30 minutes to 1 hour.
Example Calculation
If you have a pool that holds 45,000 litres and your pump operates at a flow rate of 75 litres per minute (which is 4,500 litres per hour):
45,000 L / 4,500 LPH = 10 Hours Turnover Time.
Frequently Asked Questions
Most experts recommend running your pump long enough to achieve at least one full turnover per day, though two turnovers are preferred for optimal clarity during peak summer months.
Not necessarily. While a higher flow rate turns the water over faster, it increases pressure in the system. Variable speed pumps are often more efficient as they can run at a lower flow rate for a longer period, using significantly less electricity.