Best Media for a small DIY freshwater sump
I am setting up a 24 Gallon tank and plan to build a DIY sump out of a 5 gallon bucket. I am looking for inexpensive long lasting effective filter media. I was thinking about two stages, one using fiber fill for physical filtration and then the 2nd stage with bio-balls, ceramic rings, scrubbies or something similar.
What are the best choices and where is a good place to buy them?
Thanks in advance!