I'm away on an internship, and have a relative taking care of what I kept from my tank before I left (I'm in college). I'm debating the necessity of keeping carbon in my filter, or just doing the sponge on the bottom, then more bio media in addition to the ceramic rings that came with the filter. It's filtering a 29g tank with a fat pleco and a pictus catfish.
Do I really need the carbon/will more bio media be more beneficial?
Do I really need the carbon/will more bio media be more beneficial?