I Inherited a Marineland C530 canister filter (which I am not keeping, I'm getting a different canister tomorrow). Anyway, it came with 3.5 rolls of this filter stuff, can you tell me what it is? Is it meant to be the "polishing" pad at the top of the canister? or...?
the top is pink and very fine. beneath its a coarse white material.
the top is pink and very fine. beneath its a coarse white material.

