10 Best Pool Spa Filter Cartridge Cleaner in The UK

Last updated on 08/08/2025

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20L of Pro-Kleen Hot Tub, Pool & Spa Filter Cartridge Cleaner - 40 Treatments - Improves Efficiency of Filter - Suitable for Hot Tubs, Pools & Spas - Cleans & Removes Oils, Grease, Minerals

Why We Love It

Effective at removing build-up.
Prolongs filter's lifespan.
Fast acting and long-lasting.

Main Highlights

Part of the best selling Pro-Kleen Spa Range, this professional, powerful formula thoroughly thoroughly cleans the filter of hot tubs, spas and pools. Pro-Kleen's fast acting, highly effective, long-lasting formula.
Pro-kleen Hot Tub, Pool & Spa Filter Cleaner is highly effective in removing oils, grease and minerals which affect the efficiency of the filter.
Restores filtration efficiency and deeply cleans proactively helps prolong the life of your hot tub, pool or spa's filter.
It has been tested on a wide range of hot tubs, spas and pools.
Each 5L bottle will provide 10 treatments. Only 500ml is required per use. Remove any loose debris from the filter body. Add 500ml of solution to a container with 10L of warm water, soak the filter in the solution overnight and rinse off in the morning before using it again.

Pro-Kleen Hot Tub, Pool & Spa Filter Cartridge Cleaner 10L - 20 Treatments - Improves Efficiency of Filter - Suitable for all Hot Tubs, Pools & Spas - Deeply Cleans, Removes Oils, Grease and Minerals

Why We Love It

Highly effective and fast-acting.
Prolongs filter's lifespan.
Super long-lasting formula.

Main Highlights

Part of the best selling Pro-Kleen Spa Range, this professional, powerful formula thoroughly thoroughly cleans the filter of hot tubs, spas and pools. Pro-Kleen's fast acting, highly effective, long-lasting formula
Pro-kleen Hot Tub, Pool & Spa Filter Cleaner is highly effective in removing oils, grease and minerals which affect the efficiency of the filter
Restores filtration efficiency and deeply cleans proactively helps prolong the life of your hot tub, pool or spa's filter
Tested and designed for use on all kinds of hot tubs, spas and pools
Super long lasting formula! Each 5L bottle will provide 10 treatments. Only 500ml required per use! Remove any loose debris from the filter body. Add 500ml of solution to a container with 10L of warm water, soak the filter in the solution overnight and rinse off in the morning before using it again.

Happy Hot Tubs Instant Filter Cleaner Spray 2 x 500ml Hot Tub Pool Spa Tubs Spas

Why We Love It

Extends your tub's lifespan.
Effortless application and rinse.
Promotes strong sanitization.

Main Highlights

2 x 500ml Instant Filter Cleaner Spray - ONE FREE SPRAY NOZZLE INCLUDED
Prolong the life of your hot tub!
Simply spray on, wait 15 mins and then rinse off!
Strong concentrated solution
From Happy Hot Tubs, the UK's number 1 hot tub specialist.

Clearwater Filter Cartridge Cleaner Solution for Hot Tubs and Swimming Pools, Up to 20 Uses, 1 Litre

Why We Love It

Ensures clean, hygienic water.
Extends cartridge lifespan efficiently.
Prevents debris and grease buildup.

Main Highlights

Easily remove oils and greases from swimming pool and hot tub filter cartridges
Up to 20 uses per bottle- add 50ml to every 1L of water- Just make sure your filter cartridge is fully submerged
Ensure your filter cartridges operate effectively, giving you clean and hygienic water
Extend the life of your cartridges so you can get the very best out of them and can replace them less often
Great way to prevent debris and grease build up which can lead to impaired performance

Cleenly Powerful Hot Tub Filter Cleaner Solution - for Hot Tub, Pool and Spa - Destroys, Oil, Grease, Minerals (5 Litres)

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Why We Love It

Thorough cleaning of pool filters.
Extends your filter's lifespan.
Easy and efficient usage.

Main Highlights

This Deep cleaning, powerful hot tub filter Cleaner provides a thorough clean for filters in hot tubs, spas and pools
It's highly effective in removing oils, grease, and minerals, all of which affect the efficiency of your filter
Our unique formula helps prolong the life of your hot Tub, pool or spa's filter by powering through dirt, oils, grease, debris and more
Easy to use with fantastic, long-lasting results. Each 5L bottle will provide 10 treatments.
Only 500ml is required per use. Remove loose debris from the filter body before adding 500ml of solution to 10L of warm water. Soak your filter in the high performance solution overnight and rinse off in the morning before using again. It's that easy.

Pro-Kleen MY1437 Hot Tub, Pool & Spa Filter Cartridge Cleaner 5L-10 Treatments-Improves Efficiency-Deeply Cleans and Removes Oils, Grease and Minerals, Multi

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Why We Love It

Fast-acting and highly effective.
Restores filtration efficiency.
Long-lasting and powerful.

Main Highlights

Part of the best selling Pro-Kleen Spa Range, this professional, powerful formula thoroughly thoroughly cleans the filter of hot tubs, spas and pools
Pro-Kleen's fast acting, highly effective, long-lasting formula! It's highly effective in removing oils, grease and minerals which affect the efficiency of your filter.
It has been designed and tested for use on all hot tubs, spas and pools and restores filtration efficiency and deeply cleans
Each 5L bottle will provide you with 10 powerful treatments. Only 500ml is required per use!
Add 500ml of solution to a container with 10L of warm water, soak the filter in the solution overnight and rinse off in the morning before using it again

Aquatix Pro Premium Pool & Spa Filter Cartridge Cleaner, Removes Debris & Dirt from Pool Filters in Seconds, Heavy Duty & Durable Pool Cartridge Filter Cleaner, for a Clean Flow of Water Today! (1)

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Why We Love It

Saves time cleaning pools.
Ensures durable filter protection.
Compatible with most filters.

Main Highlights

SAVE TIME: Pool cleaning can be a real chore! Aquatix Pro Premium Cartridge Cleaner removes debris and dirt effortlessly for a clean flow of water.
EFFORTLESS: The heavy duty Pool Filter Cleaner gets the job done faster, have your filter cleaned and running in seconds!
BUILT TO LAST: Buy once and never look back! Deluxe Spa Cartridge Cleaner ensures no damage to your filters.
COMPATIBLE: Designed to be compatible with most standard pool filters (filter not included).
OUR PROMISE: We go the extra mile to ensure you are fully satisfied with your purchase. With the Aquatix Pro satisfaction promise you get one year warranty on all our products. If you are not satisfied we will refund you the full price, no questions asked!

ClearSpa Cartridge Cleaner 2.5L - Hot Tubs, Swimming Pools and Spas Pleated Filters

17% Off

Why We Love It

Restores filter efficiency quickly.
Prolongs filter life span.
Removes oils and dirt.

Main Highlights

Spa Cartridge Cleaner or Filter Cleaner is a powerful blended cleaner specifically formulated to remove oils, minerals, organic matter, and dirt from Cartridge Filters
Spa Cartridge Cleaner removes these deposits and restores filter efficiency and the lifetime of the filter
Add 500ml of Spa Cartridge Cleaner to 10 litres of clean warm water and ensure the cartridge filter is fully immersed
Proactively cleaning your filters will increase the life expectancy
ClearSpa full range of Spa, Hot Tub & Pool Chemicals

ClearSpa Cartridge Cleaner 5L - Hot Tubs, Swimming Pools and Spas Pleated Filters

Spa Filter Cartridge Cleaner 1ltr

Main Highlights

Spa Cartridge Cleaner or Filter Cleaner is a powerful blended cleaner
Specifically formulated to remove oils, minerals, organic matter, and dirt from Cartridge Filters.
These deposits clog the filter and reduce filter efficiency and water circulation.
Spa Cartridge Cleaner removes these deposits and restores filter efficiency and the lifetime of the filter
Extend the life cycle of your filter, using and effective filter cleaner

8.7

Excellent

We scanned 1787 products

We reviewed these offers relevant to the Pool Spa Filter Cartridge Cleaner within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Pro-Kleen, Happy Hot Tubs, Clearwater, Cleenly, Aquatix Pro, ClearSpa, SpaChem, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Pool Spa Filter Cartridge Cleaner in the market, we considered we took a deep dive into 8936 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is 20L of Pro-Kleen Hot Tub, Pool & Spa Filter Cartridge Cleaner - 40 Treatments - Improves Efficiency of Filter - Suitable for Hot Tubs, Pools & Spas - Cleans & Removes Oils, Grease, Minerals. We love many things about this product by Pro-Kleen. What sets it apart from the competition is Effective at removing build-up, Prolongs filter's lifespan, Fast acting and long-lasting.
The best value product for most shoppers and where user satisfaction is continuously the highest is Pro-Kleen Hot Tub, Pool & Spa Filter Cartridge Cleaner 10L - 20 Treatments - Improves Efficiency of Filter - Suitable for all Hot Tubs, Pools & Spas - Deeply Cleans, Removes Oils, Grease and Minerals by Pro-Kleen based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Pool Spa Filter Cartridge Cleaner and the best cost-to-value ratio is ClearSpa Cartridge Cleaner 2.5L - Hot Tubs, Swimming Pools and Spas Pleated Filtersat ClearSpa with a 17% discount.
Our list of the best Pool Spa Filter Cartridge Cleaner is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Pool Spa Filter Cartridge Cleaner in The UK

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We scanned 1787 products

We concluded that: