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Fluval 104/105 Foam Insert
If you want your aquarium to be the talk of the town, you need to keep it clean and healthy! That's where our Fluval 104/105 Foam Insert 2-pack comes in. These replacement foam inserts are specially designed for your Fluval 104 filter. They'll provide top-notch mechanical straining of particulate waste, stopping it from clogging up other filter media. Plus, thanks to their pore structure, they'll encourage biological activity for even cleaner water.
Fluval Foam provides mechanical straining of particulate waste. It prevents particulate waste from prematurely clogging other filter media in the module stack. Although the primary purpose of Fluval Foam is mechanical filtration, biological activity will eventually occur within its pore structure.
