carbon bag outside of filter?

[Elliotjj3]

I was just wondering if the carbon has to be in the filter itself or if you could just hang the bag in the tank in a high flow spot?

 

[vetteguy53081]

I was just wondering if the carbon has to be in the filter itself or if you could just hang the bag in the tank in a high flow spot?

You can do either. . Typical application is in the path of running water