POOLPURE C-7350 Spa Filter — 50 Sq Ft Replacement for Caldera Spas, Unicel C-7350 & More

Effortless Spa Water Filtration with POOLPURE C-7350

The POOLPURE C-7350 spa filter delivers 50 square feet of filtration area in a cartridge designed to fit popular Caldera spa models and another OEM-compatible configurations. It helps keep hot tub water clear, inviting, and ready for your next soak, without requiring frequent, disruptive maintenance.

Key features blend robust filtration with practical care. The filter uses advanced Dirt-Locking technology to capture more debris than standard cartridges, helping you maintain a consistently refreshing spa environment. Its trilobal filtration fabric traps hair, dust, and fine particles while allowing impurities to be released during cleaning, so the cartridge can feel like new after a rinse.

Why this filter stands out

• Dirt-Locking filtration captures more debris than standard cartridges, supporting clearer water.
• Trilobal fabric enables easier debris release during cleaning, helping the cartridge feel like new after rinse.
• Lead-free and BPA-free materials with chlorine-resistant end caps promote safe, durable performance.
• Trusted by 5 million+ pool and spa owners worldwide and backed by industry standards.

Compatibility at a glance

• Compatible with Caldera 50, Caldera Spas 73532, 1019401, Unicel C-7350, Pleatco PCD50N, Filbur FC-3963, 73532, Pure N Clean PC-3963, Aladdin 15051, Baleen AK-60033, SD-00358 and more.
• Note: POOLPURE is an independent brand offering OEM-standard compatible replacements; model references are for compatibility only.

Real-world use and maintenance tips

In daily use, the filter helps keep spa water visually refreshing and comfortable during long soaks. For best results, clean the cartridge about once a month. Do not backwash the cartridge, as backwashing may cause damage.

• Rinse the cartridge under running water to release trapped debris and restore flow.
• Allow the cartridge to dry before reinstalling to maintain performance.

Trust and quality

POOLPURE stands behind its products with a global community of customers and recognition from sports and media institutions. The C-7350 aligns with industry filtration standards through its PHTA membership and adheres to safety-focused material choices.

In testing environments, the filter has supported athletic training scenarios with Olympic swimmer Rhyan White, and NBC Local coverage has highlighted its commitment to consistent filtration and water quality. This context reflects the brand’s focus on reliable, long-lasting spa filtration for everyday use.