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What Kinds of Filters are Available for Fiberglass Pools?

Oct 27, 2020

When you decide to buy a pool, there are many things to consider. One of the least fun things to consider is pool maintenance. But it’s also one of the most important things to think about. Did you know there are different types of pool filters? Choosing the right pool filter is important, and we’re here to help you. Check out our guide on what kinds of pool filters are available for fiberglass pools.

Sand Filter

The first type of pool filter is a sand filter. Sand filters are the least expensive option out of the three pool filters mentioned here, but they do require more maintenance.

Sand filters work just like they sound — debris from the pool filters through sand. The downside of this is that particles smaller than the sand can get through the filter. However, they may be caught by the larger debris the next time through.

Clean a sand filter regularly, either with weekly maintenance or after the water pressure is 8–10 psi above the normal level. To do this, you’ll need to backwash the filter. Backwashing the filter is a process that, again, basically works just like it sounds. The water system switches around so the water goes back into the filter and shakes up the debris to get it out. You will learn the process more specifically when you get the sand filter, or you can leave the cleaning to the pros by hiring maintenance service.

In addition to the regular cleaning, you’ll also need to replace the sand every 5–7 years. You will also need to chemically clean your filter at the end of each season. While inexpensive, maintaining a sand filter can take a bit of attention.

Cartridge Filter

Another popular type of filter is the cartridge filter. These are more expensive than sand filters up front, but they cost less to maintain and are better for the environment because they don’t require backwashing or chemical cleaning.

The way a cartridge filter works is pretty simple. The water pumps into the filter, where debris collects on the cloth of the filter. Cartridge filters are able to catch smaller debris than sand filters, allowing for cleaner pool water.

Cleaning cartridge filters is easy — you just take the cartridge out and wash it with a hose. Like sand filters, cartridge filters need to be cleaned when the water pressure is 8–10 psi above the normal level (which can range from twice a season to once every six months) and will need to be replaced every 3–5 years.

Diatomaceous Earth Filter

Diatomaceous Earth (DE) filters are the most expensive type of filter, but for good reason: they filter out the most particles and keep your pool the cleanest. Like the other filters, water pumps into the filter and it runs through DE particles that filter out most of the debris.

DE filters require backwashing, but only about once a month. As with sand and cartridge filters, you should clean your DE filter when the water pressure is 8–10 psi above the normal level. However, DE filters have a slightly longer life than sand and cartridge filters, and only need to be replaced every 7–10 years.

Let the Experts Help

Now that you know what kinds of filters are available for fiberglass pools, let our expert staff help you pick the perfect one for your fiberglass pool. Contact us today to start building the backyard life that you’ve always longed for.

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