Pool water filtration is a major stage in the treatment of your pool water.
- Filtration accounts for 70-80% of swimming pool water quality.
This stage ensures that the water is pure and clear. The polluted water is sucked up by the pump and directed to the filter, where it retains as many impurities as possible, before being reintroduced into the pool.
Various factors influence the time required for effective filtration:
- Water temperature:
The warmer the water in your pool, the more micro-organisms (bacteria, viruses, algae, etc.) proliferate.
- The weather:
Be aware that heat, but also heavy and stormy weather, encourages the proliferation of micro-organisms in the water.
- How often the pool is used:
Bathers bring a lot of organic pollution into the pool, and the more people there are, the more pollution there is.
- The type of treatment used:
If you treat with chlorine or active oxygen, the pool’s filtration time will not be the same.
We explain how to calculate the filtration time required per 24 hours 🕖:
The calculation rule to apply is very simple to remember, and we’ll explain it in detail.
➽ Filtration time per day = Water temperature divided by 2 + 1 hour, i.e. :
Examples :
16° C = 9 hours
18° C = 10 hours
20° C = 10 hours
22° C = 12 hours
24° C = 13 hours
26° C = 14 hours
HTH makes it even easier with this automatic filtration calculation module
Calculate your pool filtration time
If the water temperature reaches 30°C, it is advisable to filter 24 hours a day.
Filtration time automation:
To make it easier for you to start your pool’s filtration system, you can automate it by installing a timer in the electrical box in the equipment room.
This will also ensure that it works even when you’re away (weekends, holidays, etc…).
Exceptional circumstances:
For exceptional situations (family parties, friends, your children’s friends) where there are more than ten people in the pool, the pollution caused by these many bathers will be greater.
It would therefore be wise to increase the filtration time by a further 1.5 to 2.5 hours (depending on the flow rate (in m3/h) of your pump).
In a nutshell:
Good filtration will help reduce the use of chemicals.
- Adjust the filtration time to the number of people using the pool and the water temperature.
- Check regularly that the filter is not clogged.
- Finally, it’s essential to clean your filter with HTH FILTERWASH liquid:
↳ When the pool opens in spring
↳ Regularly during the season
↳ When winterising the pool before the winter
