Arctic Spa owners have two normal replacement paths: continue buying the proprietary filter cartridges specified for the stock system, or—on a confirmed compatible 2020+ Custom Series spa—install Spa Filter Adapter Kit v3 and use reusable generic filters sold separately.
A third, unofficial DIY workaround is possible: cut open the proprietary assembly, separate and clean the internal media, then rebuild it. Ryan used that method before designing Kit v3, but it is tedious and is not a manufacturer-published maintenance procedure. The photo teardown guide documents the process.
Arctic Spa filter replacement options
| Option | Best fit | What maintenance looks like |
|---|---|---|
| Official proprietary filters | Any owner staying with the original filtration system | Install the correct replacement cartridges and replace sealed Progressive media on the schedule for the exact system. |
| Kit v3 plus reusable generic filters | Confirmed supported 2020+ Custom Series owners with the matching Pro Filter setup | Remove, rinse, clean, and reuse compatible generic cartridges; replace them when damaged or no longer serviceable. |
Identify the filtration system before buying
Arctic Spas has used different filter systems across years and series. The words “Arctic Spa filter” are not enough to identify a correct cartridge or adapter.
- Find the spa model and serial plate.
- Confirm the model year and series.
- Inspect the current filter housing, covers, threads, and available space.
- Match the replacement part to that exact system—not to a reused model name.
Pre-2020 spas, Core Series, Classic Series, Plug N Play models, and modified filter areas are outside the standard Kit v3 compatibility statement unless they independently meet the published fitment requirements.
Kit v3 compatible reusable-filter cross-reference
The current Kit v3 product specification uses reusable cartridges with a 2-3/4-inch diameter, 9-3/4-inch length, and 1-1/16-inch top and bottom openings. Common cross-references include:
| Brand | Compatible reference |
|---|---|
| SpiroPure | SP-PS-3060 |
| Unicel | T-380 / C-2306 |
| Pleatco | PH6 |
| Filbur | FC-3060 / FC-3061 |
| Pentair | 57000500 |
| Other published crosses | Harmsco 6 / 24101-19, Premier or Springwater 24101-19, Sta-Rite 24101-19, Aladdin 10601, Swimquip 108 or 216 |
Manufacturers and retailers can revise listings. Verify the exact dimensions and opening style on the listing before purchase. Kit v3 requires the specified reusable filters, which are sold separately.
Stock Progressive Pro Filter replacement
The 2020+ Custom Series Progressive system uses sealed layered depth-media cartridges. Arctic Spas publishes a six-month replacement interval for 2020 Custom Series Progressive filters in its current JustBlue maintenance schedule. Water condition, use, damage, restriction, and later manufacturer instructions still control the exact service decision.
The normal stock-system path is to replace the complete cartridge. Owners who intentionally choose the unofficial DIY route can dismantle and clean the internal layers using the step-by-step teardown guide, understanding that it permanently modifies the original assembly and requires careful reassembly.
When Kit v3 is the replacement path
Kit v3 is confirmed for these 2020+ Arctic Spas Custom Series models with the matching Pro Filter setup: Arctic Fox, Cub, Yukon, Frontier, Ocean, Summit, Summit XL, Tundra, Kodiak, Klondiker, and Okanagan.
Use the filter-cover image in the full compatibility guide when the year, series, or filter setup is not documented. A model name by itself does not extend compatibility to an older generation.
What to buy with Kit v3
- Kit v3 adapter hardware: ordered from Spa Filter Adapter.
- Compatible reusable filters: required and sold separately.
- Original Pro Filter covers: retained and reused with the adapter setup.
The product page lists the compatible generic cartridge numbers. Buy the filter configuration specified there rather than choosing by diameter or appearance alone.
Maintenance after conversion
Reusable generic filters can be removed and rinsed between the pleats with a normal hose stream. Use cartridge cleaner only as directed, rinse it away completely, and inspect the pleats, bands, and end caps before reinstalling. Keep a second clean set if you want to rotate filters without leaving the spa unfiltered during a deep clean.
Do not use a pressure washer. High pressure can separate or damage pleated media. Replace a reusable filter when the media tears, the end cap cracks or separates, the cartridge remains loaded after proper cleaning, or normal flow cannot be restored.
Filters and FLO/FLC/ER flow warnings
A restricted filter can contribute to low flow, but it is only one part of the hydraulic system. Water level, closed valves, blocked intakes, air locks, pump operation, flow-switch state, sensors, and wiring also matter.
Use the FLO/FLC troubleshooting guide for code-specific checks. Kit v3 does not repair a failed pump, flow switch, sensor, valve, heater, or controller.
Filter Not Present after installing Kit v3
The adapter does not emulate the proprietary filter-detection signal, so Filter Not Present remains expected with Kit v3. That message is separate from a true water-flow fault. Investigate further only when circulation, heat, water clarity, pump behavior, or a separate code indicates an actual operating problem.
Order Kit v3
If the spa matches the confirmed year, series, and filter setup, order Spa Filter Adapter Kit v3 and add the compatible reusable filters listed on the product page. Filters are required and sold separately.
Ordering outside the continental U.S.: review the Canada shipping and cartridge guide or the United Kingdom cartridge and ordering guide.
FAQs
Can I clean the stock 2020+ Progressive Pro Filters?
Yes, through an unofficial DIY teardown that opens the proprietary assembly, cleans the internal layers, and rebuilds the stack. It works, but it is far more involved than rinsing a normal reusable filter and is not the manufacturer’s routine maintenance path.
Can I use generic filters in an Arctic Spa?
Yes, on a confirmed compatible 2020+ Custom Series setup using Kit v3 and the specified generic cartridges.
How often are stock Progressive filters replaced?
Arctic Spas’ current JustBlue schedule states every six months for 2020 Custom Series Progressive filters. Follow the instructions for the exact spa and replace sooner when condition or flow requires it.
Are filters included with the adapter kit?
No. Kit v3 includes adapter hardware. Compatible reusable filters are required and sold separately.
References
This is an independent aftermarket owner resource. Spa Filter Adapter is not affiliated with, endorsed by, or approved by Arctic Spas. Product and maintenance claims are separated by system and tied to the sources below.