Filter Foam Cartridge Fluval Bio-Foam MAX replacement sponge 2 pcs FV-1899

Replacement sponge cartridge for Fluval filtration systems, supplied as a pack of two foam inserts designed to trap particulate debris and support biological filtration. The Filter Foam Cartridge Fluval Bio-Foam MAX replacement sponge 2 pcs FV-1899 fits Fluval units that accept Bio-Foam MAX sponges and is intended for routine maintenance to improve water clarity and reduce suspended waste in aquariums.

Advantages

These foam cartridges combine mechanical and biological filtration by physically capturing uneaten food and detritus while providing a porous surface for beneficial nitrifying bacteria to colonize. The pack of two allows staggered replacement or simultaneous renewal to restore filtration efficiency. The open-cell foam structure permits good water flow and reduces clogging when maintained regularly.

Suitable for

• Freshwater and planted aquariums using compatible Fluval filtration systems
• Routine filter maintenance and cartridge replacement cycles
• Improving water clarity by removing suspended particles
• Supporting biological filtration in established tanks

Key specifications

• Quantity: pack of 2 foam cartridges
• Material: open-cell foam suitable for biological colonization
• Function: mechanical particle trapping and biological surface area
• Compatibility: designed for Fluval Bio-Foam MAX compatible filter models
• Maintenance: washable and reusable for multiple service cycles when rinsed correctly

How to use

Turn off the filter and remove the existing foam cartridge according to the filter manufacturer’s instructions. Rinse the replacement foam briefly in tank water to remove packaging residue and insert it into the designated cartridge slot, ensuring proper fit and orientation. Restart the filter and monitor initial water flow; perform scheduled rinses in tank water during maintenance to avoid removing beneficial bacteria.

Usage recommendations

Replace foam cartridges as part of regular filter maintenance, typically when flow decreases or during routine monthly inspections. Avoid cleaning with tap water that contains chlorine; instead, gently rinse in aquarium water to preserve biological colonies. Keep a spare foam cartridge on hand to allow staged replacements and maintain continuous biological filtration.