how do you size your filter?

how do you decide which filter to go with?

A: The manufacturer, Mars Fishcare has a lot of information about this on their website. In general average stocking levels for the size of an aquarium are considered when matching the right filter for any aquarium. You should probably view the set up video at Mars Fishcare for more information. You may also want to download
a copy of the manual which you can also find at Mars Fishcare. It contains a lot of information about the filter that is not on the Mars Fishcare web site.