Your pool filter plays a big role in water clarity and overall water quality. If you are replacing a filter, upgrading equipment, or simply trying to understand what you have, this guide breaks down the differences between cartridge, sand, and DE filters.
Cartridge filters
Cartridge filters use pleated cartridges to trap debris as water passes through.
Why people like them
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Great everyday clarity
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No backwashing, so less water waste
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Simple maintenance
Basic maintenance
Rinse cartridges when the pressure rises about 20 to 25% above your normal clean reading. A deeper clean a few times per season helps keep performance consistent.
Common replacement parts
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Filter cartridges
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Tank o-ring
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Pressure gauge
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Air relief parts
Sand filters
Sand filters trap debris in a sand bed and are cleaned by backwashing.
Why people like them
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Durable and straightforward
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Easy to operate
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Backwashing is quick
Basic maintenance
Backwash when pressure rises about 20 to 25% above normal, then rinse. Over time, the sand can become less effective and may need replacing depending on usage and water conditions.
Common replacement parts
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Multiport valve gasket
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Laterals
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Pressure gauge
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Valve and tank o-rings
DE filters (Diatomaceous Earth)
DE filters use grids coated with DE powder and can deliver very clear water.
Why people like them
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Excellent water clarity
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Fine filtration performance
Basic maintenance
DE filters typically require backwashing and recharging with DE powder, plus occasional full cleanings of the grids.
Common replacement parts
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Grids and manifold
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O-rings and gaskets
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Air relief parts
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Pressure gauge
Which filter is best?
The best filter depends on your pool setup and what matters most to you, like maintenance time, water use, and the level of clarity you want.
If you are not sure what filter you have, check the label on the tank or send us the model number and we can help match the correct parts.
