Hagen 12-Pack Fluval U3 Poly/Carbon Cartridge Aquarium Water Filter

Fluval U3/U4 is the best aquarium filter I have ever used, and purchasing the filter insert in bulk is the best deal I can find.

These cartridge work very well and are easy to install. I change them every three weeks and water is clean and clear.

Buy Hagen 12-Pack Fluval U3 Poly/Carbon Cartridge Aquarium Water Filter Now

This purchase is a great value. I really like the Fluval filter system but the cost of changing the filters as often as recommended is higher than I would like. Now I can get a large number at a better price.

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