Ok so this only uses sponges then with no trays/compartments? The xp3 is a tray system.
How would you go about adding bioballs or ceramics? This ebay item seems to only come with filter and white sponge not a third black not course pad.
Would this be an effective filter at all? I know 59$ is super cheap for the capacity and flow but will it actually let bio bacteria to propagate well. Or I guess more to the point, will it easily take the place of all my hobs?
Or should I look into something like the http://www.ebay.com/itm/Jebao-304-Aq...ht_2766wt_1163