I know old and very wide open question. I've seen so many post that say Bio Media is Biomedia. I know allot of folks run Eheim media in Fluval and in all different combinations. My question is do any of you believe that some media works better in certain canisters due to the canisters design? Also I've been eyeballing Seachem Matrix or pond Matrix seems to be cheaper then Biomax or Eheim does anyone use it?