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How long do pool filters typically last before needing backwashed?
Backwashing removes debris from sand or DE filters. It's typically done when pressure rises 8-10 psi above the starting level or after heavy pool use. Weekly backwashing is common, but overdoing it can waste water and disrupt pool chemistry.
Backwashing is a process where water is run in reverse through the filter system to remove the accumulated debris from a sand or DE filter. The frequency of backwashing depends on several factors:
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Filter Pressure: Most filters have a pressure gauge. When the pressure rises 8-10 psi above the starting pressure (after a cleaning), it's usually time to backwash.
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Pool Usage: Pools that see heavy use or are exposed to significant amounts of debris might require more frequent backwashing.
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Type of Debris: Finer debris might clog the filter faster than larger debris.
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Size of the Filter: A larger filter doesn't need backwashing as often as a smaller one because it has a larger area to accumulate debris.
As a general guideline, many pool owners find themselves backwashing once a week during peak usage. However, it's essential to remember that over-backwashing can waste water and upset pool chemistry, so it's vital to backwash only when necessary.