pool with crystal clear water is inviting for you and your
guests. In addition to maintaining proper chemical balance
with the pool's water, it is important to filter out the waterborne
particulates, keeping the water crystal clear. There are multiple
filter options available. Each
are canister like vessels plumbed directly into the pools
pump system. When the pools pump is on, the valves can direct
the water through the installed filter. Ultimately, the particulates
suspended in the water are trapped in the filter.
The three most popular types of filters are
Sand, Cartridge and DE (diatomaceous earth). Each of the three
filters differ in cost, maintenance and filtering quality.
The Sand Filter is the least expensive, requires the least
amount of maintenance and is the least effective in filtering.
Sand provides the filtering media. The filter is cleaned by
back washing (the process of reversing the direction of the
flow direction of the water) to push the contaminants out
of the filter and to the lawn. The sand media lasts a relatively
long time. Every three to five years the sand should be replaced.
The use of cartridge filters has become more
popular. The filter is more effective and relatively easy
to maintain. Maintaining the filter is as simple as hosing
the filter off with a high-pressure nozzle every 3-4 months.
The cartridge filter will catch smaller particles than a sand
filter. The cartridge filter itself is a replaceable item
and can be expected to require replacement every 3 years or
The DE filter is the most effective means
of filtering the pool. With the increased effectiveness comes
higher costs and increased maintenance. DE or diatomaceous
earth is an organic substance comprised of the fossilized
remains of microscopic sized hard-shelled creatures found
in the ocean. This fine dust collects the finest particles
at 2-4 microns. The DE media does require more maintenance,
as each year the filter should be disassembled and cleaned.