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How beneficial is the "eheim mech" media in an eheim classic filter? The instructions tell you to place it first in the bottom of the canister, then the blue sponge, the your bio media. It states it traps large debris and disburses (i think they mean disperses) water.

I was considering getting rid of it, placing the blue sponge in bottom and using the extra room for matrix or similar.

Is there a down side to doing this?


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