Description
Refresh the clarity of your spa or pool with the Darlly Spa/Pool Replacement Filter Cartridge [11801] (701038), a premium 180 sq ft Opal XL cartridge designed to fit Waterco USA Opal filtration systems. This replacement cartridge combines substantial filtration area with easy-service design, so you can enjoy clean water and effortless maintenance.
Key features that set this cartridge apart
- 180 sq ft filtration surface delivers extended cleaning cycles and better dirt-holding capacity, helping you go longer between backwashes.
- Opal XL compatibility specifically crafted for Waterco Opal filter models, ensuring a precise fit and reliable performance in spa and pool setups.
- Top Style Open and Bottom Style Open construction for straightforward installation, simple alignment, and efficient backwashing—minimizing downtime during maintenance.
- Pleated media design increases surface area and improves flow while capturing contaminants like oils, dirt, and debris without restricting water movement.
- Chemical resilience engineered to hold up under typical spa and pool sanitizers (chlorine, bromine, and salt systems), helping maintain clear, inviting water.
- Direct replacement for models 11801 and 701038, giving you a hassle-free swap without altering plumbing or accessory components.
Who benefits from this replacement cartridge
Ideal for homeowners who rely on Waterco’s Opal filtration systems and need a dependable, high-capacity cartridge to keep spas and pools sparkling. It’s especially valuable when you’re upgrading from older cartridges, after periods of heavy use, or when you want to maintain optimal circulation with minimal maintenance effort.
Practical use cases and benefits
- Residential spas with Opal XL units that demand strong debris control and clear, inviting water for daily comfort.
- Small-to-medium pools using Opal filtration that require a robust cartridge to sustain consistent flow and ease of backwashing.
- Seasonal maintenance where extended filtration life reduces downtime and keeps equipment running smoothly during peak use periods.
- Maintenance planning—the 180 sq ft media supports longer intervals between cleanings when paired with regular care and proper sanitizer management.
Care and installation tips
For best results, rinse the cartridge with a garden hose to remove loose debris before reinstalling. Avoid using high-pressure jets that could damage the pleated media. When storing, keep the cartridge dry and protected from compression to preserve its structure. If you notice a drop in flow or a rise in pressure, it’s a clear signal to inspect and consider replacement with this Darlly Opal XL cartridge to restore optimal filtration.
Why choose this Darlly cartridge
Beyond being a precise fit for Waterco Waterco USA Opal XL systems, this cartridge emphasizes practical filtration performance with a durable media design and easy serviceability. It’s a purpose-built solution that translates to clearer water, more reliable operation, and less guesswork when it’s time to refresh your filter media.
| Application | Waterco USA |
| Bottom Style | Open |
| Model | Opal |
| Square Footage | 180 sq ft |
| Top Style | Open |