You def want to use your old filter media. Either put it in your new filter or in the tank. Don t mess with the carbon for now.
Most people don t use carbon except when removing meds. I slice it open on the top, shake out all of the carbon & put filter floss or polishing pads in.
If you can fit the old one in & the new filter pad (modified as described), that would be ideal.
Most people don t use carbon except when removing meds. I slice it open on the top, shake out all of the carbon & put filter floss or polishing pads in.
If you can fit the old one in & the new filter pad (modified as described), that would be ideal.