Filter Question

[bazzbeen]

how often do you have to change the carbon filter media

 

[SlyPolak]

You dont need carbon in you filter at all! Unless you are trying to remove meds and maybe a small amount of tannins, carbon doesnt do much. If you arent doing any of the above just leave it in because some bacteria must be on it and it will provide more surface area for it to thrive on.
BUT if you absolutely feel like you need it I would say 3 weeks, MAYBE 4..............