This kit contains 2.5kg of Biohome Ultimate, 1 set of coarse, medium and fine foams (11" x 17") plus lots of gel filter starter balls to seed the filter with beneficial bacteria and prevent any ammonia or nitrite spikes if this kit is used to replace media in a mature system. If the kit is used for a mature system it is best to swap out old media gradually (over a month or so) to make the transition as smooth as possible. Once the new media matures in the filter it should last at least 6-10 years at high efficiency but structurally it will last well beyond that. See the Q&A page for how to clean Biohome media and other important information about filtration.
Foams for the outer parts of trays should be cut into 9cm (3.5") x 28cm (11") strips. You will be able to cut 4 foams from each 17" x 11" coarse and medium foam in the kit.
The fine pads can be carefully ripped to a suitable thickness then cut to size for the top tray if you want to fit more media into the filter - you only need one fine pad on top of the top tray.
The pictures on this page show the various ways that foams and fine pad can be set up to suit your stocking scenario.
This video explains the full process of upgrading an FX2 filter and discusses the many different ways that the foams can be set up (to suit your stocking scenario):
HOW TO UPGRADE AN FX2 FILTER