Foam pre-filter assembly for the Fluval 104 and 105 Multi Stage Filters.
Holds 4 foam prefilter blocks that filter out large solids before the water runs through the stack of media cartridges.
Straight Bladed Impeller for Fluval 105 and 205.
Fits all Fluval 104 and 204 filters manufactured after January of 2001.
The manufacturer recommends replacing this item annually for optimum filter performance.
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