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DE FILTERS
Size of particles filtered: 2-5 microns.
Cleaning frequency:
Whenever the pressure reaches 10 psi or higher than starting pressure. Usually depends on filter size,bather load, water condition and pool environment.
Replacement frequency:
After each backwash must add DE (usually by adding in pool skimmer)
Pros:
Fast, provides the finest filtration of the three media,if used with multiport provides flexibility of sand filter, needs to be backwashed less often.
Cons: More expensive, must replace DE after cleaning, use of certain chemicals may clogg filter faster.
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