What Media Do You Put In Your Fluval Canister Filters?

  1. C

    CPARKTX Valued Member Member

    Just got a 206 for new 40b. I was planning to keep the bio-sponge in the bottom tray, and fill the top tray with Matrix....but what for the middle tray? Filter floss?
  2. Samuel97

    Samuel97 Well Known Member Member