noobaquarists
Aquarium Advice Freak
hi guys i just got an eheim 2213 canister filter for 20$ . the only thing is i've never used a canister filter before and im not sure what i need for media. along with the filter i was given a garbage bag full of bio-balls. can i use these in my eheim 2213 alone or do i need some other sort of media as well? thank you all in advance