Filter Foam Insert Hagen Fluval Bio-Foam 1 for Fluval 10x/20x models

Hagen Fluval Bio-Foam 1 for Fluval 10x/20x models is a replacement foam insert designed for use with compatible Fluval internal and power filters. The open-cell porous foam captures suspended particles and debris while providing a surface area that supports colonization by beneficial nitrifying bacteria. It functions as a combined mechanical and biological media to help maintain water clarity and contribute to stable aquarium water parameters when used as part of regular filter maintenance.

Advantages

The foam's coarse pore structure offers consistent mechanical filtration without restricting flow in Fluval 10x and 20x filter housings. Its durable polymer composition resists breakdown during routine cleaning cycles and maintains structural integrity, allowing for repeated rinsing and reuse. By providing extensive surface area for biofilm formation, the insert helps support biological filtration and contributes to faster establishment of beneficial bacteria in both freshwater and lightly stocked systems.

Suitable for

• Replacement mechanical/biological media in Fluval 10x series internal filters
• Replacement mechanical/biological media in Fluval 20x series power filters
• Routine maintenance and cartridge rotation to keep aquarium water clear
• Freshwater aquaria and lightly stocked community tanks

Key specifications

• Material: open-cell polymer foam designed for filtration
• Filtration type: mechanical and biological
• Designed fit: inserts sized for Fluval 10x and 20x filter compartments
• Reusability: washable and reusable with routine rinsing
• Surface texture: coarse porous structure for debris capture and bacterial colonization

How to use

Install the Bio-Foam 1 insert into the designated foam slot of the Fluval 10x or 20x filter according to the filter manufacturer's assembly instructions. For initial setup, rinse the foam briefly in dechlorinated water to remove dust from packaging, then place it in the filter. During routine maintenance, remove the foam and rinse gently in aquarium water or dechlorinated tap water to remove trapped debris without killing established bacteria. Replace the foam if it becomes torn, compressed beyond recovery, or if flow is significantly reduced despite cleaning.

Usage recommendations

Rinse the foam in removed aquarium water rather than under running tap water to preserve beneficial bacteria. Rotate foam cleaning into your regular maintenance schedule and combine with chemical or fine mechanical media if additional filtration polishing is required for very clear water or heavily stocked tanks.