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Fluval C4 C-Nodes Biological Filtration Media 7 Ounce Box
Fluval C4 Stage Five C-Nodes
Ceramic C Nodes feature a complex pore system where beneficial bacteria thrive. Their unique shape provides a higher filtration surface and more biological surface area than most biological media, resulting in a healthier aquarium environment.
1/2 of your C-Nodes should be replaced every 6 months. Never replace all the C-Nodes at one time, as the valuable colonies of beneficial bacteria would be lost.
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