That's the whole thing. The filter came with very limited instructions and I had no clue where the carbon filter went. I read here that carbon wasn't the best thing for plants so left the carbon filter out altogether. The bottom section has whatever was in it when the canister was in the box. If I remember correctly, the next two sections were empty so I originally filled those sections with the beads. The top section has the pad that was in it from the box. After a couple days, I took the beads out of the second section from the top and put in some fluff. The fluff didn't help much. I'll try the Purigen but I'll have to check the size. The filter came with three boxes of something that looks very close to that but maybe the size is different. The question is, where did you put them all? I could only get one and a half box in the two available sections.
