Can I use different media to those included with my Prime filter?

Yes, there are a variety of media's available on the market. Hydor recommend that whatever media you use, It should comprise: a Coarse media, Biological media layer and a fine polishing layer. Failure to have these 3 keys media's could mean that the filter does not reduce pollutants and clean the water properly. For blackwater aquariums, it is possible to use bagged peat media inside the media container and this should be placed between the Sintered glass rings and the fine wool media.