You should know the volume of water in your pool for adding chemicals, and have the overall stats about your pool.

To figure out the volume of water in gallons in your pool, you can use on of the two following formulas:

If your pool is a rectangle: multiply length x width x average depth (shallow end + deep end / 2) x 7.5

If your pool is round, oval, or freeform: multiply length x width x average depth (shallow end + deep end / 2) x 5.9

All the measurements you start with should be in feet. This will get you the approximate volume if your pool is a freeform shape…

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