http://evolutionaqua.com/acatalog/Kaldnes_K1_Media.html
the site
i just saw it on a website a while ago, apparently the use it for sewerage
but to be honest, i dont think i really needed it, i kinda got some buyers remorse:D being completley up front, realising that my current media set up, well, its over kill as it is.
but, there was something awesome having constantly moving media, looks so industrial...
so i got it anyways:D
when i set up new tank, i will re arrange the media in the compartments in this same sump to incorporate static AND moving media.
so, in essense, i could probably relieve myself in the tank and its still ok:D
:rolfl: