Yes. The pre-filter elements are special material and specific micron rating.
Yes. The pre-filter elements are cleanable several times prior to replacement.
Use only pre-filter elements supplied by the R.O. System manufacturer.
Swimming pool filter elements and home under sink type filter elements are made from the wrong material and will fall apart in seawater, are large (loose) micron rating, and will cause fouling of and damage to the R.O. Membrane Element.
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