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Filter Foam Insert Hagen Fluval Bio-Foam 1 for Fluval 10x/20x models
Summary description:
Hagen Fluval Bio-Foam 1 is a replacement filter foam insert designed for Fluval internal and power filters compatible with 10x and 20x series. The porous foam provides mechanical filtration by trapping debris while supporting beneficial bacteria for biological filtration. Use it as a primary mechanical/biological media in routine maintenance and cartridge replacement to maintain water clarity and aquarium health.