Choosing the right filter system for a salt water pool is critical because the corrosive nature of salt water can affect components. We researched and compared seven leading models based on manufacturer specifications, published industry standards (ANSI/NSF 50, APSP), and aggregated owner feedback. This guide focuses on filter engines that balance performance, durability, and ease of maintenance for salt water environments.
| Photo | Product | Score | Buy |
|---|---|---|---|
|
🚗
|
Hayward Pro Series S244T Sand Filter Top Pick 24-inch tank, 2.0 sq. ft. filtration area, 45 GPM max flow |
9.0 | 🛒 Check Price |
|
🚗
|
Pentair Clean and Clear Plus 320 Cartridge Filter Runner Up 320 sq. ft. cartridge area, 150 GPM max flow, 2-inch inlet/outlet |
8.7 | 🛒 Check Price |
|
🚗
|
Waterway Clearwater 50 sq. ft. Cartridge Filter Best Value 50 sq. ft. cartridge, 1.5-inch ports, 35 GPM design flow |
8.4 | 🛒 Check Price |
|
🚗
|
Hayward EC65A Perflex Extended-Cycle DE Filter Best Filtration 65 sq. ft. DE grid, 1.5-inch ports, 62 GPM max flow |
8.8 | 🛒 Check Price |
|
🚗
|
Pentair Tagelus TA 60D Sand Filter Durable Sand Filter 24-inch tank, 60 GPM max flow, 1.5-inch multiport valve |
8.2 | 🛒 Check Price |
|
🚗
|
Intex Krystal Clear 120V Sand Filter Pump Above Ground Pick 16-inch tank, 1.6 sq. ft. filtration area, 2,100 GPH pump |
7.8 | 🛒 Check Price |
|
🚗
|
Aqua Pro 111M 100 sq. ft. Cartridge Filter Compact Cartridge 100 sq. ft. cartridge, 1.5-inch ports, 40 GPM max flow |
7.3 | 🛒 Check Price |
1. Hayward Pro Series S244T Sand Filter: Top Pick
The Hayward Pro Series S244T is a workhorse sand filter built to withstand salt water’s corrosive effects. Its thermoplastic tank and corrosion-proof components are specifically designed for salt water pools, according to the manufacturer. In our evaluation based on owner feedback, users consistently praise its low maintenance and reliable performance, with many reporting clear water even during heavy use. The top-mount valve simplifies backwashing, and the 24-inch tank provides ample dirt-holding capacity.
However, sand filters are not the most efficient at capturing fine particles; they trap particles down to about 20-40 microns. If you have very fine debris or desire crystal-clear water, a cartridge or DE filter might be better. Also, the sand needs replacement every few years, adding a recurring cost. This filter is ideal for pool owners who prioritize simplicity and durability over absolute water clarity.
- Corrosion-proof thermoplastic tank resists salt water damage
- Top-mount multi-port valve for easy backwashing and winterizing
- Large 24-inch diameter reduces backwash frequency
Pros: Highly durable construction for salt water; Simple operation and maintenance
Cons: Requires periodic sand replacement every 3-5 years
2. Pentair Clean and Clear Plus 320 Cartridge Filter: Runner Up
The Pentair Clean and Clear Plus 320 offers excellent filtration efficiency for salt water pools. Its large cartridge area means less frequent cleaning, and the thermoplastic construction resists salt corrosion. Owner feedback highlights the ease of maintenance: simply pull out the cartridge and hose it down. The filter delivers crystal-clear water, capturing fine particles that sand filters miss.
On the downside, cartridges are a recurring expense and can be messy to clean. Some owners report that the lid seal can be tricky to reinstall perfectly, leading to minor leaks if not aligned. This system is best for those who want high clarity and are willing to periodically replace cartridges. Skip it if you prefer a set-it-and-forget-it approach or have a large pool with heavy debris load.
- Large 320 sq. ft. cartridge area for extended cleaning cycles
- Corrosion-resistant thermoplastic tank and base
- Easy cartridge removal with no tools required
Pros: Superior filtration down to 10-15 microns; Low water waste compared to backwashing
Cons: Cartridges need periodic replacement (every 1-2 years)
3. Waterway Clearwater 50 sq. ft. Cartridge Filter: Best Value
The Waterway Clearwater 50 sq. ft. cartridge filter is a solid choice for above-ground salt water pools. Its ABS plastic construction is fully resistant to salt corrosion, and the compact size fits tight spaces. Based on owner feedback, it provides good clarity for typical above-ground pools and is straightforward to operate. The value proposition is strong for the price point.
However, the 50 sq. ft. cartridge means you’ll need to clean it more often, especially during heavy use or if debris is present. It is not designed for large in-ground pools. Some users mention the O-ring can be prone to dry rot over time. This filter is ideal for small to medium above-ground pools where budget and simplicity are priorities. Skip it if you have a large pool or want longer intervals between cleanings.
- Compact and affordable design for above-ground pools
- Corrosion-proof ABS tank and lid
- Easy-access drain plug for winterizing
Pros: Very budget-friendly without sacrificing quality; Simple to install and maintain
Cons: Smaller cartridge area requires more frequent cleaning
4. Hayward EC65A Perflex Extended-Cycle DE Filter: Best Filtration
The Hayward EC65A Perflex DE filter delivers the finest filtration of any type, trapping particles as small as 2-5 microns. This results in exceptionally clear water, which salt water pool owners love. The extended-cycle design uses a bump handle to dislodge debris, extending time between backwashes. The construction is corrosion-resistant, suitable for salt water.
However, DE filtration is more labor-intensive: you must add fresh DE powder after each backwash and dispose of the spent DE properly (it is not biodegradable). Some owners find the bump mechanism can be finicky. Also, the initial cost is higher than sand or cartridge. This filter is best for pool owners who demand the highest water clarity and don’t mind a bit more maintenance. Skip it if you prefer low-maintenance options.
- Superior filtration down to 2-5 microns for sparkling water
- Extended cycle design reduces backwash frequency
- Corrosion-resistant materials including bump handle mechanism
Pros: Exceptional water clarity; Less frequent backwashing than standard DE filters
Cons: DE powder is messy and requires proper disposal
5. Pentair Tagelus TA 60D Sand Filter: Durable Sand Filter
The Pentair Tagelus TA 60D is a robust sand filter built to last. Its tank is made from a corrosion-proof material that stands up well to salt water, and the reinforced dome adds extra strength. Based on owner feedback, it provides consistent filtration and requires little attention beyond occasional backwashing. The multiport valve is intuitive and reliable.
Where it falls short is value: it costs more than similar-sized sand filters from other brands, and the performance is comparable. Some users note that the pressure gauge can be inaccurate. This filter is best for those who prioritize long-term durability and are willing to pay a premium. Skip it if you are budget-conscious or have a smaller pool.
- Heavy-duty corrosion-proof tank with reinforced dome
- Large 24-inch sand bed for effective filtration
- Easy-to-operate multiport valve with pressure gauge
Pros: Extremely durable build quality; Long service life with minimal maintenance
Cons: Heavier and more expensive than comparable sand filters
6. Intex Krystal Clear 120V Sand Filter Pump: Above Ground Pick
The Intex Krystal Clear is a popular choice for above-ground salt water pools. It combines a pump and sand filter in one unit, making setup straightforward. The housing is made from corrosion-resistant materials, and the flow rate is adequate for pools up to 15,000 gallons. Owner feedback indicates it keeps the water clear with regular backwashing.
However, the 16-inch tank is small, meaning more frequent backwashing and shorter media life. The pump motor is not as durable as separate units, and some users report noise. This system is best for small above-ground pools where budget and simplicity are key. Skip it if you have a large pool or want a long-lasting, heavy-duty solution.
- All-in-one pump and sand filter for easy setup
- Corrosion-proof housing for salt water use
- Quick disconnect couplings for seasonal storage
Pros: Affordable and complete system; Easy to install and operate
Cons: Smaller filter tank requires more frequent backwashing
7. Aqua Pro 111M 100 sq. ft. Cartridge Filter: Compact Cartridge
The Aqua Pro 111M cartridge filter is a budget-friendly option for smaller salt water pools. Its vertical design saves space, and the polymer tank resists corrosion. In our evaluation based on owner feedback, it provides acceptable clarity for moderate use. The cartridge is easy to remove and clean.
However, durability is a concern: several owners report the lid O-ring fails within a year, causing leaks. The flow rate is limited, making it unsuitable for larger pools or high-flow pumps. This filter is a temporary or low-cost solution for small pools. Skip it if you want a long-term investment or have a pool over 10,000 gallons.
- Space-saving vertical design for tight installations
- Corrosion-resistant polymer tank
- Top-mounted pressure gauge and air relief
Pros: Compact footprint; Decent filtration for the size
Cons: Some owners report leaks at the lid seal
Frequently Asked Questions
What type of filter is best for a salt water pool?
All three main types (sand, cartridge, and DE) can work with salt water, but the best choice depends on your priorities. Sand filters are durable and low-maintenance. Cartridge filters offer better filtration and water savings. DE filters provide the finest filtration but require more upkeep. Ensure the filter is made from corrosion-resistant materials like thermoplastic or polymer.
Do salt water pools require special filters?
Not necessarily, but the filter must be constructed from materials that resist corrosion from salt water. Standard filters with metal components may degrade faster. Look for filters with thermoplastic tanks, stainless steel clamps (if any), and non-metallic internal parts. Many manufacturers offer salt-water-rated models.
How often should I backwash a sand filter in a salt water pool?
Typically, backwash when the pressure gauge rises 8-10 psi above the starting pressure. This can range from weekly to monthly depending on pool usage and debris load. Salt water itself does not change backwash frequency, but the filter size and pool conditions do.
Can I use a regular cartridge filter in a salt water pool?
Yes, as long as the filter housing is corrosion-proof. Many cartridge filters are made from plastic or polymer that resists salt damage. However, the cartridge media itself may degrade faster if not rinsed regularly. Replace cartridges per manufacturer recommendations.
What maintenance does a DE filter need in a salt water pool?
After each backwash, you must add fresh DE powder to the skimmer. The spent DE should be disposed of properly (not in gardens or storm drains). The grids may need periodic cleaning with a hose to remove caked-on debris. Ensure the bump mechanism or manifold is working correctly.
Our Verdict
After researching and comparing specifications, owner feedback, and industry standards, the Hayward Pro Series S244T Sand Filter earns our top pick for its proven durability in salt water, ease of use, and reliable performance. For those who prefer cartridge filtration, the Pentair Clean and Clear Plus 320 is an excellent runner-up, offering superior water clarity with manageable maintenance.
Last reviewed and spec-checked: July 13, 2025. We re-check our picks and listings periodically.
