Media Pool Filters vs. Cartridge Pool Filters - Learn the Difference

When it comes to maintaining a pool, one of the most crucial elements is effective filtration. As a pool owner, understanding the difference between various types of pool filters can help you make an informed decision. This guide will delve into two popular types: media pool filters and cartridge pool filters. We will explore their functionality, pros and cons, maintenance requirements, cost, and efficiency to help you decide which filter fits your needs best.

Media Pool Filters

Media pool filters use a filtering medium to capture debris and contaminants. The water from the pool is directed into a tank filled with media (sand, crushed glass or glass pearls). The media traps dirt and particles as the water flows through, allowing clean water to return to the pool.

These filters are typically installed for larger pools or those that see heavy usage. This construction allows for significant dirt and contaminants capture, effectively keeping pool water clean.

We are working with the Astral CA - Series Media Filters (find out more)

Astral CA - Series Media Pool Filter System

Pros and Cons of Media Pool Filters

Pros

• The initial outlay is more expensive than a cartridge filter however the ongoing costs are minimal

• Easier Maintenance

• Media can endure for five to seven years before replacement 

• Filtration efficiency can be improved using additives and alternate media

  
  

Cons

• The standard media filtration doesn't filter out particles under 20 microns

• Media filters generally require more space than cartridge filters

• Backwashing wastes water

• Requires more flow to filter and, therefore, less energy efficient.
  

  MEDIA RECOMMENDATION: WATERCO GLASS PEARLS Manufactured from 100% pure glass, Waterco glass pearls are a new generation of filter media, capable of providing water of superior clarity and requiring less water for backwashing. 

Cartridge Pool Filters

Cartridge pool filters consist of a cartridge made from pleated fabric. Water is pumped from the pool through the filter, and the cartridge captures dirt and debris. Once the filter is clogged or dirty, the cartridge can be removed, cleaned, or replaced, making them a convenient option.

Cartridge filters are often chosen for smaller pools or those with less frequent use because they are easier to maintain and are compact. They require less plumbing and space compared to media filters, which can also make them an appealing choice.

We are working with the Astral XC - Series Cartridge Filters (find out more)

Astral XC - Series Cartridge Pool Filter System

Pros and Cons of Cartridge Pool Filters

Pros

• The cleaning process uses much less water. No backwashing - simply lift cartridges out and hose them down. This saves water. 

• Best for smaller pools and tight pool areas

• Can filter out small particles (as small as 10 microns)

• Performs well at lower speeds (perfect for energy-efficient variable speed pumps).

  
  

Cons

• Higher ongoing maintenance costs

• Cartridge can only last anywhere from one to three years (depending on conditions and maintenance)

• System can shut down o "no flow" if the element is dirty or clogged, which can turn the pool green if unnoticed

Key Differences in Maintenance

Understanding the maintenance requirements of both filter types can significantly influence your decision-making process.

Media Pool Filters: As mentioned, these filters require backwashing, which involves reversing the water flow to flush out debris trapped in media. This process can take several minutes and should be performed when the pressure gauge indicates a rise over the normal operating level. Additionally, media should be replaced every 3-5 years.

Cartridge Pool Filters: Maintaining cartridge filters is as simple as removing the cartridge, rinsing it off with a hose, and placing it back in the filter tank. Users should clean cartridges weekly, depending on factors like pool usage and environmental conditions. Cartridges typically need replacement every 1-2 years, based on usage, local conditions and cleaning frequency.

Efficiency and Performance

Deciding on which filter is more efficient may depend on your swimming pool's specific demands.

Media Pool Filters tend to shine in larger pools or those where efficiency is paramount. They handle large volumes of water and debris while keeping running times low. Their ability to backwash helps prevent a buildup that could affect water quality.

Cartridge Pool Filters perform well for mid-sized and smaller pools. They do a good job with contaminants but may require a little more diligence in terms of maintenance to ensure they are operating at peak efficiency.

For some pool owners, the key will be the balance between ease of maintenance and efficiency. Those who prioritise low upkeep may be drawn to cartridge filters, while those looking for superior filtration could lean towards media filters.

Making Your Decision

Choosing between a media pool filter and a cartridge pool filter ultimately boils down to several factors: the size of your pool, how often you use it, and your maintenance preferences. If you prioritize effective filtration and don’t mind more maintenance and larger setup requirements, a media pool filter might be the better option for you.

Conversely, if you have a smaller pool, prefer a low-maintenance solution, and value water conservation, a cartridge filter could be the right fit for your needs.

When making your decision, consider booking in with our pool professionals for an onsite visit to find the perfect solution for your pool.

Achieve a sparkling swimming pool and healthy swimming environment