Wellis Crystal Super Fine OEM Spa Filter – 50 Sq. Ft. – AKU2998

Genuine Wellis Crystal Super Fine OEM Spa Filter

Maintain clean, clear spa water with the genuine Wellis Crystal Super Fine replacement filter. This OEM cartridge is manufactured for compatible Wellis hot tubs and swim spas equipped with the corresponding open-ended filter system.

The AKU2998 provides 50 square feet of pleated filtration media and measures approximately 5 inches in diameter by 13¼ inches long. Both ends are open, with no threaded connection.

This genuine Wellis filter replaces the earlier Wellis AKU1831 cartridge.

Package includes one OEM Wellis filter cartridge.

🔹 Key Benefits

• Genuine OEM Wellis replacement filter
• Crystal Super Fine pleated filtration media
• Provides 50 square feet of filtration area
• Helps capture dirt, debris, oils and other contaminants
• Supports proper water circulation and filtration
• Open-ended design with no threaded connection
• Washable and reusable with proper maintenance
• Direct replacement for Wellis AKU2998
• Replaces the earlier Wellis AKU1831 cartridge

🔍 Compatible Wellis Spas

The AKU2998 has been used in select versions of the following Wellis hot tubs and swim spas:

• Wellis Cordoba 2
• Wellis Danube Turbine 2019
• Wellis Danube W-Flow 2019
• Wellis Earth P&P
• Wellis Elbrus 2018
• Wellis Elbrus Forest Holidays
• Wellis Hercules
• Wellis Jersey Sterling Silver
• Wellis London Deluxe
• Wellis Malaga 2018
• Wellis Malaga 2018 Standard
• Wellis Malaga Forest Holidays
• Wellis Manhattan 2018
• Wellis Manhattan NTR
• Wellis Marbella
• Wellis Marbella Forest Holidays
• Wellis Olympus
• Wellis Palermo 2018
• Wellis Palermo 2018 Standard
• Wellis Paris Deluxe
• Wellis Porto 2
• Wellis Rio Grande Turbine 2019
• Wellis Rio Grande W-Flow 2019
• Wellis Valencia 2
• Wellis Week End 453

Important: The Wellis Olympus listed above is a Wellis model. This filter is not being represented as compatible with hot tubs manufactured by the separate Olympus Spas brand.

Wellis may use different filters based on the spa’s model year and filtration configuration. Confirm the AKU2998 or AKU1831 number on your current filter, or compare its measurements and open-end design before ordering.

📏 Confirm Your Filter Before Ordering

Your existing filter should match all of the following:

• Approximately 5 inches in outside diameter
• Approximately 13¼ inches in overall length
• 50 square feet of filtration media
• Open top measuring approximately 2⅛ inches
• Open bottom measuring approximately 2⅛ inches
• No threaded connection on either end
• Wellis filter number AKU2998 or earlier AKU1831

If you are uncertain, contact Southern Leisure with pictures of the top and bottom of your current filter, its measurements and your spa’s model information before ordering.

📋 How to Replace

1. Turn off power to the spa at the breaker.
2. Remove the filter cover or skimmer assembly.
3. Carefully remove the existing filter cartridge.
4. Clean any loose debris from the filter compartment.
5. Remove all protective packaging from the new filter.
6. Position the new cartridge in the same orientation as the previous filter.
7. Make sure the filter is properly seated in the housing.
8. Reinstall the filter cover or skimmer assembly.
9. Restore power and confirm normal water circulation.

💬 Southern Leisure Says

Matching the Wellis part number is the most dependable way to identify this filter. If the current cartridge is marked AKU2998 or AKU1831 and its dimensions and open ends match, this is the proper OEM replacement.

Do not select a spa filter based only on its length and diameter. The opening sizes and end-cap configuration must also match.

🧼 Care & Maintenance

• Rinse the filter regularly with a garden hose.
• Carefully rinse between each pleat to remove trapped debris.
• Clean more frequently during periods of heavy spa use.
• Use a dedicated spa cartridge cleaner to remove oils and residue.
• Rinse away all cleaning solution before reinstalling the cartridge.
• Do not use a pressure washer, stiff brush or sharp cleaning tool.
• Maintain balanced spa-water chemistry to support filter performance.
• Replace the filter if the pleats become torn, collapsed or permanently restricted.
• Consider rotating two filters so one can be cleaned and dried thoroughly.

📌 Product Quick Facts

• Brand: Wellis
• Product: Crystal Super Fine spa filter
• Manufacturer number: AKU2998
• Replaces: Wellis AKU1831
• Filtration area: 50 square feet
• Diameter: Approximately 5 inches
• Overall length: Approximately 13¼ inches
• Top: Open
• Bottom: Open
• Threaded connection: No
• Package quantity: One filter
• OEM product: Yes

⚙️ Specifications

Manufacturer	Wellis
Manufacturer Number	AKU2998
Previous Wellis Number	AKU1831
Filter Type	Crystal Super Fine pleated cartridge
Filtration Area	50 sq. ft.
Outside Diameter	Approximately 5 inches (124–125 mm)
Overall Length	Approximately 13¼ inches (334–335 mm)
Top Connection	Approximately 2⅛-inch open hole
Bottom Connection	Approximately 2⅛-inch open hole
Threaded	No
Package Quantity	One filter cartridge
OEM Product	Yes

❓ Frequently Asked Questions

Is this a genuine Wellis filter?

Yes. This is a genuine OEM Wellis Crystal Super Fine filter with manufacturer number AKU2998.

Does this filter replace AKU1831?

Yes. The Wellis AKU2998 is the replacement for the earlier AKU1831 cartridge. Always compare the dimensions and open-end configuration before ordering.

Does this filter have a threaded connection?

No. Both ends are open and do not have threads.

How many filters are included?

This listing includes one OEM Wellis filter cartridge.

Will this fit every Wellis spa?

No. Wellis uses several different filter sizes and connection styles. Confirm the filter number, dimensions and end-cap design before ordering.

Does this fit Olympus Spas?

This filter has been used in a Wellis model named Olympus. That model should not be confused with hot tubs manufactured by the separate Olympus Spas brand. Compatibility with Olympus Spas is not being claimed.

How often should I clean the filter?

Rinse it regularly and perform a deeper cleaning with a dedicated cartridge cleaner based on spa usage and water conditions. Heavily used spas require more frequent cleaning.

When should the filter be replaced?

Replace it when the pleats become torn, damaged, collapsed or permanently restricted, or when normal water flow cannot be restored through cleaning.

🛡️ Why Buy From Southern Leisure?

• Genuine OEM Wellis replacement part
• Compatibility assistance from experienced spa professionals
• Help confirming the correct filter before ordering
• Convenient shipping and local pickup options
• Trusted by spa owners since 2013

📦 Shipping & Pickup

• Ships as one OEM Wellis filter cartridge
• Shipping and pickup options are displayed at checkout
• Inspect the cartridge and end caps for shipping damage upon arrival
• Keep the filter clean and protected until installation
• Confirm compatibility before installing or wetting the filter