Product Overview

The Pentair Clean & Clear Plus 520 Cartridge Filter is a premium, high-capacity pool filtration system built for large residential pools that need powerful water clarity, dependable flow, and longer cleaning cycles. With 520 square feet of total cartridge filtration area, this filter captures dirt, debris, and fine particles efficiently while helping maintain clean, sparkling pool water.

Designed with a rugged fiberglass-reinforced polypropylene tank, the Clean & Clear Plus 520 is built to withstand outdoor conditions, pool chemicals, and demanding everyday use. Its four-cartridge design provides excellent dirt-holding capacity, making it a great choice for pool owners who want strong performance with lower-maintenance cartridge cleaning.

Ideal For

• Large residential swimming pools
• Pool owners wanting longer filter cycles between cleanings
• Systems where backwashing is not preferred
• Energy-efficient pool setups using variable-speed or high-efficiency pumps
• Replacing or upgrading an existing Clean & Clear Plus 520 filter

Key Features

• 520 sq. ft. filtration area for high-capacity debris collection
• Four-cartridge design provides excellent dirt-holding performance
• No backwashing required — cartridges can be removed and rinsed clean
• Fiberglass-reinforced polypropylene tank for strength, durability, and chemical resistance
• High-flow design supports strong circulation and efficient filtration
• Lock ring tank clamp allows secure access for service and cartridge maintenance
• Continuous internal air relief helps maintain proper filter operation
• Large-capacity design helps extend time between cartridge cleanings

Benefits

The Clean & Clear Plus 520 helps keep pool water clear while reducing the need for frequent maintenance. Unlike sand or D.E. filters, this cartridge system does not require backwashing, which helps conserve water and makes routine cleaning more convenient. Simply remove the cartridges, rinse them with a garden hose, and reinstall them when clean.

Its large 520 sq. ft. cartridge area allows the filter to hold more debris before service is needed, making it especially useful for larger pools, high-use pools, or pool systems exposed to leaves, dust, and outdoor debris.

Specifications

Customer-Facing Q&A

Q: Does this filter require backwashing?
A: No. The Pentair Clean & Clear Plus 520 is a cartridge filter, so it does not require backwashing. The cartridges are removed and rinsed clean when needed.

Q: How many cartridges does this filter use?
A: This model uses four cartridges.

Q: Is this filter good for large pools?
A: Yes. With 520 sq. ft. of filtration area and a high-flow design, this filter is ideal for larger residential pools.

Q: What replacement cartridges does it use?
A: The common Pentair replacement cartridge set for the Clean & Clear Plus 520 is R173578, or compatible CCP520 replacement cartridges.

Q: Is this the largest Clean & Clear Plus model?
A: Yes. The 520 sq. ft. model is the largest filter in the Clean & Clear Plus cartridge filter series.

Q: What is the benefit of a cartridge filter compared to a sand filter?
A: Cartridge filters typically offer finer filtration and do not require backwashing, helping save water and simplify routine maintenance.

Why Choose the Pentair Clean & Clear Plus 520?

Choose the Pentair Clean & Clear Plus 520 if you want a high-performance cartridge filter that delivers excellent water clarity, strong debris capacity, and easier maintenance. Its large four-cartridge design makes it a dependable upgrade for pool owners who want cleaner water with fewer service interruptions.