Filters & Filtration
A pool filter is the most vital part of a swimming pool. Without it the water
cannot be cleaned and the chemical balance cannot be maintained. Therefore the water
will be murky and bacteria will exist.
There are three types of filters used in swimming pools and spas today.
Diatomaceous Earth (D.E.) Filter: This is by far the most efficient filter for
swimming pools in both energy efficiency and filtration capability. D.E. filters
will filter out particles 1 to 3 microns in diameter. You cannot see a particle with
the naked eye until it is 40 microns.
Cartridge Filter: Cartridge filters are the second most efficient type of filter.
They will filter out 10 - 12 microns in diameter.
Sand Filter: Sand filters are the least efficient in filtration and in energy
efficiency. Sand filters filter out particles 20 microns in diameter.