if you have a planted tank, it's better to remove the carbon and replace with another media
I have an aquaclear 30
I have a sponge, some substrate of some sort and an ammonia remover
another sponge or maybe some floss. Basically anything the bacteria can live in.
I also saw a new cartridge at my LFS going for 20$ but it's good forever. It clears 4 times more particles than carbon, and doesn't remove the fertilizer from your water
if you don't have plantas, it's all good