Your main filter is the heart of your filtration system, doing most of the biological work.
There are several options available for a main filter, from homemade to commercial all-in-one units. We sell the Nexus filter range produced by Evolution Aqua.
Don't forget to look at the PRE-FILTERS section as well, as we recommend having a pre-filter no matter which type of main filter you have.
ALL ABOUT NEXUS FILTERS