Prepare replacement filter media with these red sponge blocks, offered in packs of two, four or eight.
$138.00
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A CLOSER LOOK
The open sponge texture gives water a path through the material while providing a surface for established biological filtration. The photos show grouped blocks and a close-up of the porous structure. This is filter media for a suitable housing, not a powered filter or a complete filtration system on its own.
Explore the specificationsChoose the quantity that matches your maintenance or replacement plan.
The porous texture supports mechanical trapping and a colonization surface in a working filter.
Rectangular pieces can be compared with the available space in your filter compartment.
No pump or casing is listed; this product is sponge media only.
No. It supports a functioning filtration system but does not replace cycling, water testing or routine maintenance.
Biot Sponge for Aquarium Filtration
Free economy shipping is available on all orders. Estimated delivery is 10–15 business days; timing can vary by destination.
View shipping policyRequest a return within 14 days after delivery for eligible items that are unused, in their original condition and packaging. See the policy for eligibility and full terms.
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Review the measurements, materials and included pieces in the product details. Check your selected size, color or style before adding to cart.
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