Filter Cartridge Hagen Fluval 4Plus — Activated Carbon and Mechanical Media Replacement (014276)

Replacement filter cartridge for Hagen Fluval 4Plus internal and complete filter systems. This cartridge combines mechanical media with activated carbon to trap particulate debris and adsorb dissolved impurities that cause discoloration and odors, helping to restore water clarity in freshwater and planted aquariums. It is designed for routine maintenance and easy installation as a direct replacement compatible with Fluval 4Plus units.

Advantages

The cartridge integrates a layered mechanical pad with granular activated carbon to provide two-stage filtration in a single unit, reducing the need for multiple separate media. Mechanical media captures larger particles and waste, while activated carbon reduces dissolved organics and odors. The design permits quick swap-out during scheduled filter maintenance and helps maintain consistent flow and filtration performance when replaced at recommended intervals.

Suitable for

• Freshwater aquariums equipped with Hagen Fluval 4Plus filters
• Planted tanks where water clarity and low dissolved organics are important
• Routine filter maintenance and cartridge replacement

Key specifications

• Filtration types: mechanical and chemical (activated carbon)
• Compatibility: Hagen Fluval 4Plus internal/complete filter systems
• Media format: layered mechanical pad and granular activated carbon contained in a single cartridge
• Intended use: removal of particulate debris, color-causing dissolved organics, and odors

How to use

Turn off the filter and disconnect power before opening the unit. Remove the old cartridge from the Fluval 4Plus housing and dispose of it according to local waste regulations. Unpack the replacement cartridge and insert it into the filter so that the mechanical pad faces the inflow side and the carbon section is positioned according to the filter’s orientation. Reassemble the housing, restore power, and check for normal flow. Replace the cartridge at regular intervals or when decreased flow or persistent discoloration and odor are observed.

Usage recommendations

For best results, use this cartridge as part of a regular maintenance schedule—typically every 4–6 weeks depending on bioload and water conditions. Do not rinse the activated carbon under running water before installation, as this can remove fines; follow the filter manufacturer’s guidance. Monitor water parameters regularly and replace the cartridge sooner if performance declines.