What is the flow rate of a 3500 gallon spa based on a 30 minute turnover rate?

To find the flow rate for a 3500-gallon spa with a 30-minute turnover rate, you divide the total volume by the turnover time in hours. Since 30 minutes is 0.5 hours, the calculation is 3500 gallons ÷ 0.5 hours, which equals a flow rate of 7000 gallons per hour. This means the spa needs to circulate 7000 gallons of water every hour to achieve a complete turnover in 30 minutes.