Flow Rate Formula:
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The pool flow rate is the speed at which water moves through your pool's filtration system, measured in gallons per minute (GPM). Proper flow rate ensures effective filtration and chemical distribution.
The calculator uses the basic flow rate formula:
Where:
Explanation: The formula calculates how many gallons per minute your pump needs to move to achieve complete turnover in the desired time.
Details: Correct flow rate ensures proper filtration, chemical distribution, and energy efficiency. Too high wastes energy, too low leads to poor water quality.
Tips: Enter pool volume in gallons and desired turnover time in hours (typically 6-8 for residential pools). All values must be positive numbers.
Q1: What's the ideal turnover time?
A: Residential pools typically aim for 6-8 hours. Commercial pools may require faster turnover (2-4 hours).
Q2: How do I find my pool volume?
A: Calculate based on pool shape: Rectangular = length × width × avg depth × 7.5; Circular = radius² × 3.14 × avg depth × 7.5.
Q3: What affects flow rate requirements?
A: Pool size, bather load, presence of water features, and local health codes for commercial pools.
Q4: Should I oversize my pump?
A: No. Oversized pumps waste energy and can damage filters. Match pump to calculated flow rate needs.
Q5: How does this relate to filter size?
A: Filter must handle the calculated flow rate. Check manufacturer's maximum flow rate for your filter model.