At first, the pool’s volume must be known, and the pool’s purpose, whether it’s a private, public or kids pool.
A private pool has a turn over rate of 6 hours on average.
A public pool has a turn over rate of 4 hours on average.
A kids pool has a turn over rate of 2 hours on average.
Turnover rate is the rate by which the total pool volume has passed through the filter.
For example, a 60 cubic meter private pool would require a 6 hour turn over rate, which means that the filtration rate is 60/6 = 10 cubic meter/hour.
If it were a public pool, it would require a filtration rate of 15 cubic meter/hour, and similarly if it were a kids pool, it would require a rate of 30 cubic meter/hour