Product Information: Boospa is gradually replacing its Topology filter range with Cleonia filters, designed by us. Depending on stock levels, you may receive either model. The delivered filter may therefore differ slightly in terms of base color and label, but remains strictly identical in terms of reference, dimensions, and compatibility.
Spa Filter
Compatible References:
- Boospa: A-000000-00857
- Darlly: 81004
- Darlly EU: SC775
- Filbur: FC-3695
- Magnum/Gota Pure: CA100
- Pleatco: PCD100W
- Topology®: T-8399
- Unicel: C-8399
Outer Diameter: 200 mm
Length: 418 mm
Top: Handle
Bottom: 92mm Opening
 |  |
| Top: Handle | Bottom: Open |
Compatible with
Caldera spas
Frequently Asked Questions
Is this filter compatible with my Caldera spa?
Yes, this filter is designed for Caldera Spas. If your current filter is marked with one of the following part numbers: 81004, C-8399, T-8399, FC-3085, or PCD100W, this is a direct replacement. Simply check the part number printed on your old filter before ordering. If you're unsure,
our filter selection guide can help you confirm the correct model.
How can I check if the 418 x 200 mm dimensions match my current filter?
This filter measures 418 mm (16.5") in length and 200 mm (7.9") in diameter. To confirm compatibility, measure your old filter without the gasket. Measure the length from one end of the cylinder to the other, and measure the diameter across the center of the cartridge. A difference of a few millimeters due to the gasket is normal. See our spa filter measuring guide to ensure accurate measurements.
Do I need a special cleaner for this Caldera filter?
Regular rinsing with clean water helps extend the life of the cartridge. For a deep cleaning, use a dedicated spa filter cleaner to remove oils and debris trapped in the pleats. Browse our selection of
spa filter cleaning products suitable for this type of cartridge.
How often should I replace this 418 mm filter in my Caldera spa?
The lifespan of a filter cartridge depends on how often your spa is used, your water quality, and how regularly the filter is cleaned. In general, a properly maintained filter will last 12 to 24 months. Check the condition of the pleats regularly. If they become distorted, discolored, or filtration performance declines despite cleaning, it's time to replace the cartridge.
Can this filter with a top handle and open bottom be installed without special tools?
This filter features a top handle and an open bottom with a 92 mm (3.6") opening. This design allows for easy installation and removal by hand, with no tools or threading required. Just make sure your filter housing has the same open-bottom configuration before replacing the filter.
Can I receive this filter quickly if my Caldera spa has stopped filtering?
If the filter is in stock, orders placed before 1:00 PM ship the same day. Please check the product page at the time of your order to confirm current availability.
What if the 81004 filter doesn't fit my spa once I receive it?
You can return the filter provided it is unused, uninstalled, and in its original packaging. Returns are accepted within 14 days of delivery. For professionals in the spa industry, this period may be extended to 60 days. Before ordering, check the part number on your current filter and compare the dimensions (418 x 200 mm) to minimize the risk of ordering the wrong model. If you're unsure about compatibility, feel free to contact us before placing your order.
What shipping options are available?
Shipping options depend on the product, your country, and your delivery address. Depending on your order, delivery may be available to your home or to a pickup point. The available shipping methods are displayed in your shopping cart.
How can I track my order?
You will receive email notifications throughout the shipping process, including a tracking link or tracking number once your order has been shipped. You can also track your order from your customer account.
Which payment methods do you accept?
We accept credit and debit cards, PayPal, PayPal Pay in 4, bank transfer, and check. For bank transfer payments, your order will be shipped once the funds have been received.