Fluval U3
Finest Filters stock a complete range of compatible foam and polycarbon filter cartridges to fit the Fluval U3 Filter. We are also pleased to now offer our own compatible biomax for efficient biological filtration in your Fluval U3 filter. We offer bundle sets of our filter media which offer the best value compared to buying parts individually. Our foam pads, polycarbon filter cartridges and biomax are made to the same specification as the original brand filters.
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4 x Compatible Fluval U3 PolyMax Filter Cartridges£6.49
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 4 cartridges. Sold in 3 different sizes for the U2, U3 and U4 filters.
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8 x Compatible Fluval U3 PolyMax Filter Cartridges£9.99
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance. These cartridges should be replaced approximately every 4 weeks, each pack contains 8 cartridges. Sold in 3 different sizes for the U2, U3 and U4 filters.
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12 x Compatible Fluval U3 PolyMax Filter Cartridges£13.49
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance. These cartridges should be replaced approximately every 4 weeks, each pack contains 12 cartridges. Sold in 3 different sizes for the U2, U3 and U4 filters.
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4 x Fluval U3 Compatible Plain Foam and 4 x Compatible PolyMax Filter Cartridges£9.49
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 4 cartridges and 4 plain foams. Sold in 3 different sizes for the U2, U3 and U4 filters.
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8 x Fluval U3 Compatible Plain Foam and 8 x Compatible PolyMax Filter Cartridges£17.49
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 8 cartridges and 8 plain foams. Sold in 3 different sizes for the U2, U3 and U4 filters.
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12 x Fluval U3 Compatible Plain Foam and 12 x Compatible PolyMax Filter Cartridges£23.49
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 12 cartridges and 12 plain foams. Sold in 3 different sizes for the U2, U3 and U4 filters.
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4 x Compatible Foam and 4 x Polymax Filter Cartridges and 170g Biomax for Fluval U3£13.49
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 4 cartridges and 4 plain foams and 1 x 170g compatible biomax media. Sold in 3 different sizes for the U2, U3 and U4 filters.
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8 x Compatible Foam and 8 x Polymax Filter Cartridges and 2 x 170g Biomax for Fluval U3£23.99
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 8 cartridges and 8 plain foams and 2 x 170g compatible biomax media. Sold in 3 different sizes for the U2, U3 and U4 filters.
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12 x Compatible Foam and 12 x Polymax Filter Cartridges and 3 x 170g Biomax for Fluval U3£32.99
The polymax / clearmax filter cartridge helps reduce overall aquarium maintenance and filter phosphate, nitrate and nitrite. These cartridges should be replaced approximately every 4 weeks, each pack contains 12 cartridges and 12 plain foams and 3 x 170g compatible biomax media. Sold in 3 different sizes for the U2, U3 and U4 filters.
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Compatible Fluval Clean & Clear Cartridges (2 Pack)£4.99
- Our compatible Fluval Clean & Clear Cartridges are packed with special high-performance resins which are proven to effectively reduce phosphates concentration for healthier fish. The innovative cartridge which is small and compact for all types of aquaria, is also fantastic at removing nitrate, combining the removal of both toxins at once.
- The compatible Clean and Clear cartridge reduces phosphate and nitrate levels
- Extends time between water changes - reduces tank maintenance. Recommended to change the compatible clean & clear cartridge once per month.
- (2 Pack of filter cartridges) Simply add to your Fluval U cartridge. Compatible with the U range of filters, U1, U2, U3 and U4.
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Compatible Fluval Clean & Clear Cartridges (4 Pack)£8.99
- Our compatible Fluval Clean & Clear Cartridges are packed with special high-performance resins which are proven to effectively reduce phosphates concentration for healthier fish. The innovative cartridge which is small and compact for all types of aquaria, is also fantastic at removing nitrate, combining the removal of both toxins at once.
- The compatible Clean and Clear cartridge reduces phosphate and nitrate levels
- Extends time between water changes - reduces tank maintenance. Recommended to change the compatible clean & clear cartridge once per month.
- (4 Pack of filter cartridges) Simply add to your Fluval U cartridge. Compatible with the U range of filters, U1, U2, U3 and U4.
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Compatible Fluval Clean & Clear Cartridges (8 Pack)£16.99
- Our compatible Fluval Clean & Clear Cartridges are packed with special high-performance resins which are proven to effectively reduce phosphates concentration for healthier fish. The innovative cartridge which is small and compact for all types of aquaria, is also fantastic at removing nitrate, combining the removal of both toxins at once.
- The compatible Clean and Clear cartridge reduces phosphate and nitrate levels
- Extends time between water changes - reduces tank maintenance. Recommended to change the compatible clean & clear cartridge once per month.
- (8 Pack of filter cartridges) Simply add to your Fluval U cartridge. Compatible with the U range of filters, U1, U2, U3 and U4.
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4 x Compatible Fluval U3 Foams + 4 x Polycarbon Filters + 2 x Clean & Clear Cartridges£13.49
You are purchasing a pack of 4 x Finest Filters compatible Fluval foam pads and 4 x compatible polycarbon filter cartridges and 2 pack of compatible Fluval Clean & Clear cartridges suitable for the Fluval U3 aquarium filter.
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8 x Compatible Fluval U3 Foams + 8 x Polycarbon Filters + 4 x Clean & Clear Cartridges£24.99
You are purchasing a pack of 8 x Finest Filters compatible Fluval foam pads and 8 x compatible polycarbon filter cartridges and 4 pack of compatible Fluval Clean & Clear cartridges suitable for the Fluval U3 aquarium filter.
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4 x Compatible Fluval U3 Foams + 4 x PolyMax Filters + 2 x Clean & Clear Cartridges£13.99
You are purchasing a pack of 4 x Finest Filters compatible foam pads and 4 x compatible polymax / clearmax filter cartridges suitable for the Fluval U3 aquarium filter and 2 x compatible Clean & Clear cartridges.
Replacement PolyMax compatible filter cartridges for Fluvals U3 series of internal filters. These help control green water and unsightly algae growth by adsorbing and trapping phosphate, nitrite and nitrate. It effectively produces crystal clear water, reduces odours, and creates ideal conditions for fish and plants. The polymax / polyclear filter cartridge helps reduce overall aquarium maintenance. These cartridges should be replaced approximately every 4 weeks.
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8 x Compatible Fluval U3 Foams + 8 x PolyMax Filters + 4 x Clean & Clear Cartridges£24.99
You are purchasing a pack of 8 x Finest Filters compatible foam pads and 8 x compatible polymax / clearmax filter cartridges suitable for the Fluval U3 aquarium filter and 4 x compatible Clean & Clear cartridges.
Replacement PolyMax compatible filter cartridges for Fluvals U3 series of internal filters. These help control green water and unsightly algae growth by adsorbing and trapping phosphate, nitrite and nitrate. It effectively produces crystal clear water, reduces odours, and creates ideal conditions for fish and plants. The polymax / polyclear filter cartridge helps reduce overall aquarium maintenance. These cartridges should be replaced approximately every 4 weeks.
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4 x Compatible Fluval U3 Foams£5.49
Finest-Filters Compatible filter media pads are made from the same material as the Fluval originals. Quantity for sale: 4 Filter Pad Specification: Beige Foam Filter Pad Measurements: 195 x 60 x 13mm. It is recommended to change the foam pad every 3-6 months.
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8 x Compatible Fluval U3 Foams£8.99Finest-Filters Compatible filter media pads are made from the same material as the Fluval originals. Quantity for sale: 8 Filter Pad Specification: Beige Foam Filter Pad Measurements: 195 x 60 x 13mm. It is recommended to change the foam pad every 3-6 months. Learn More
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12 x Compatible Fluval U3 Foams£12.49Finest-Filters Compatible filter media pads are made from the same material as the Fluval originals. Quantity for sale: 12 Filter Pad Specification: Beige Foam Filter Pad Measurements: 195 x 60 x 13mm. It is recommended to change the foam pad every 3-6 months. Learn More
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4 x Compatible Fluval U3 Polycarbon Filter Cartridges£6.49
You are buying a pack of 4 compatible polycarbon filter cartridges to fit the Fluval U3 internal filter.
These filter cartridges have a polyester side for mechanical filtration, and a carbon impregnated side for chemical filtration of the aquarium water.
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