So I bought a second hand Eheim 2215 off Kijiji tonight.
It's my first time using a canister filter. The man I bought it from said it has all the media already in it. I have printed the media setup from this site but my question is..
Do I need to go buy new filters/carbon and biomedia or can I just rinse and use what's already in there?
He said he was using on a fish tank.
Thanks in advance!