Description
Introducing the Darlly Spa/Pool Replacement Filter Cartridge (70804) FC-1976 — a high-capacity 80 sq ft cartridge engineered to deliver consistently clean, clear water for your spa or pool. Built to be compatible with Clean & Clear Plus configurations and Waterway Crystal Water C-7470 systems, this cartridge is designed to perform reliably inchlorine, bromine, and saltwater environments alike.
Key design and material advantages that matter in real-world use:
- 80 sq ft filtration media provides extended run times between cleanings and better dirt-holding capacity, so you spend less time wrestling with maintenance and more time enjoying your spa or pool.
- 7" outside diameter, 20" length with 3" open top and 3" open bottom for versatile fitting and strong, consistent flow across filtration cycles.
- Reinforced end caps with screen mesh integrated during production, boosting end-cap strength and overall cartridge integrity to resist cracking and leakage under heavy use.
- ABS center core injection-molded and NSF-certified for safety, durability, and dependable water flow from start to finish.
- Single-layer tri-lobal media — the highest-quality spun-bonded polyester that resists fraying and tearing while standing up to chlorine and bromine without losing filtration efficiency.
- Secure bands and robust construction designed to maintain pore structure and performance over time, minimizing performance drops as the cartridge ages.
- Screw-thread integrity guaranteed for life — if the threads fail during removal, you won’t face costly repairs or downtime. We stand behind this critical component so you can service your system with confidence.
Why this cartridge is a smart choice for your system
For spa enthusiasts and pool owners, every detail matters. The Darlly 70804 cartridge isn’t just about trapping more debris; it’s about delivering cleaner water with less maintenance effort. The combination of reinforced end caps, a solid ABS core, and chemically resistant media means you’ll notice clearer water, steadier flow, and fewer filter changes—even in demanding setups.
Practical use cases and tips
Ideal for hot tubs and therapy baths where high-temperature operation and frequent sanitizer use demand durable, chlorine- and bromine-resistant filtration media. Works well with systems that require robust filtration over longer cycles, including saltwater pools where media longevity and chemical tolerance are critical. - Maintenance routine: Rinse the cartridge under clean water before installation to remove manufacturing debris, and periodically check the end caps and threads for any wear. If you ever encounter thread-related removal issues, the lifetime guarantee covers this key point of failure.
- Performance tips: Monitor pressure and flow; a gradual drop in flow without visible blockage is a cue that it may be time to replace, ensuring you maintain optimal filtration and water clarity.
Choose the Darlly 70804 cartridge for dependable filtration that lasts, with thoughtful engineering that protects your investment and keeps spa and pool water sparkling. The combination of high-capacity filtration, reinforced construction, and a lifetime guarantee on the screw-thread makes this cartridge a standout choice for discerning buyers who value longevity and real-world performance.