The average 21-foot round pool with a depth of 48 inches holds 13,500 gallons of water. A 21-foot round pool with a depth of 52 inches holds 14,500 gallons, according to Robelle.
Continue ReadingMeasuring all dimensions in feet, the formula to calculate water capacity for round or oval pools is: average depth x length x width x 5.9. The formula for a square or rectangular pool is: average depth x length x width x 7.5. Accurately calculating water capacity allows owners to determine the correct amount and type of chemicals necessary to clean the pool and maintain the water's pH balance.
Learn more about Pools & Hot TubsA 20-by-40-feet pool with an average depth of 5 feet holds 21,600 gallons of water. The same shape pool with an average depth of 6 feet holds 36,000 gallons.
Full Answer >Cloudy water in swimming pools is usually caused by a chemical problem in the pool. A pool test kit is used to test the chemical balance of the water.
Full Answer >The amount of gallons of water in a pool varies greatly depending on the size of the pool. The average in-ground backyard pool holds between 18,000 and 20,000 gallons of water.
Full Answer >Increase free chlorine in a pool by adding 1 pound of chlorine or bromine for every 20,000 gallons of water. You will need to purchase the appropriate amount of chlorine or bromine for the size of the pool. This process takes under 30 minutes, but the material should circulate overnight.
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