I have the 3 middle sections filled with bio media, the ceramic noodles pumice, and those random plastic things I raided probably 3 other canasters to get enough it can hold alot I would hate to buy it it would cost a fortune..
I probably wouldn't bother with anymore filter wool did yours come with the pads around the outside? Boimedia is more important than the filter wool and the stuff that came with it seems to do a good job.