CIRCULATION AND FILTRATION
The circulation and filtration of your pool is essential since moving water is greatly easier to take care of than stagnating water. So, the pump can be turned off for a maximum of 6 to 8 hours. Otherwise, the water chemistry will have to be readjusted.
The filter is connected to the return line, after the pump, but before the heater.,
Whether it's a sand or cartridge filter, it has to be cleaned once a year.
For sand filters, sand must be changed every 5 - 6 years,
For cartridge filters, the cartridge is good as long as it doesn't look like angel hair.
For sand filters, a backwash is not needed weekly, but strictly if needed.