Sand Filters vs Cartridge Filters: Choosing the Right Pool Filter

Pool filters are one of the most important parts of a pool. Using your pump ensures that your water stays clean and free of debris. Without it, your pool water can quickly become cloudy and ruin your summer plans.

Cartridge filters and sand filters are the most popular pool filters. Each method has distinct advantages and disadvantages when it comes to keeping your pool clean. So how do you choose the best one for you? First, let's take a look at the difference between these two filters.

 

Traditionally, sand filters have been the most economical and compact form of filtration for in-ground and above-ground pools. Silica sand is used to remove particles from water. Sand grains are barbed and have few rough edges, which is how they trap contaminants and debris that pass through the filter. Over time, particles trapped in the sand can build up, causing poor water flow and reducing the efficiency of the filter.

Ultimately, the sand filter needs to be back washed. Backwash reverses the flow of water through the sand filter, releasing trapped debris from the sand filter and out of the pool through the backwash line.

 

Captures 20–40 micron-sized dirt and debris

Easy to use and simple to operate

Low maintenance

Backwash is easy

Sand media lasts longer than filter cartridges

Sand needs to be replaced every 5-8 years

Lower filtration capacity than cartridge filters (20–40 microns vs 10–15 microns)

Backwashing can disrupt your water balance

 

While more expensive than sand filters, cartridge filters are just as easy to maintain and more effective as long as you don't have a huge pool. These filters filter water using large filter cartridges, consisting of several layers of interwoven paper webs. As the water passes through the filter, the particles get trapped between the layers of paper.

Cartridge filters can filter out twice as much dirt and debris as sand filters, and their larger filter area removes smaller particles (10-15 microns). Maintenance is also much easier because backwashing is not required. Instead, remove the cartridge from the tank and hose it down to remove debris and grime.

 

Removes dirt particles as small as 10–15 microns

Easy maintenance, no need for backwashing

Ideal for filtering above-ground pools

Reduced energy costs by utilizing lower pump pressure

Reduces wear and tear on pool pumps

Low water flow impact

Maintenance costs may be higher than other filters

Cartridges need to be replaced every few years

Not practical for very large pools

Filters need to be cleaned at least twice a year, depending on usage

Higher upfront price

So which filter is best for your pool? The answer depends on your situation.

If you're used to sand filters and your pool doesn't experience many green or cloudy water issues, then a sand filter may be the best option for you. If your pool is experiencing water clarity issues more frequently, and you're tired of always having to add chemicals and backwash the pool to fix those issues, then a cartridge filter is the way to go.

If you are still not sure which filter is right for your pool, please contact us and we can recommend the right pool filter for you.

MAYGO POOL is a professional custom pool pumps and accessories manufacturer. We can provide professional technical solutions for both residential and commercial swimming pools. Since its establishment, MAYGO POOL has successfully developed the main component of CFD hydraulic design, the impeller. Our product range includes pool pumps, sand filters, cartridge filters, filtration systems, and pool accessories. The product is constantly updated and iterative, with more functions and more choices.