Fluval C4 Carbon 3 Pack

Link to: Fluval C4 Carbon 3 Pack

Carbon replacement pouches for your Fluval C4 filter. These pouches are the exact size required for this particular HOB filter. Carbon is great if you have excessive tannins in your water and you want to clear it up. Just put the carbon pouch in and let it work its magic. After time the carbon will become exhausted and need to be replaced. 

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