Looking into different kinds of sumps to use for the aquarium that will in the future be home to our Bimac and I would like to get some opinions on the best way to do it. I watched a few Youtube videos on intergrading a Refugium into the sump tank but noticed those do not contain as much bio-media? Where the tanks that do not have a refugium they have more mechanical filtration. Which one is better suited for Octocare? Pro's and cons of each? Is having them both better/worse?