It is made of high-quality knitted polyester and a special water-resistant bonding material.Its special structure ensures good water penetration.It supplies beneficial bacteria that remove toxic ammonia and nitrite.It has a large surface area so that large numbers of bacteria can grow at a fast rate.It is durable, easy to clean. It is the most advanced aquarium filter sponge on the market.
-26%
FILTER BIO-MAT HARD
$4.23 Save:$1.00(26%)
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