Fluval Foam Filter Block 204/205 304/305
Fluval 204 - 304 / 205 - 305 Foam Filter Block 2 pieces per display pack Fluval Foam Inserts capture large particles for effective mechanical filtration, the crucial first stage in the filtration process. Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. These inserts also enhance biological filtration. For freshwater and marine environments.
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