KSY Aquatics 12D Multi-Layer Aquarium Filter Sponge Pad — 30×20cm, Reusable Fish Tank Filter Media, 12-Layer Filtration

12 Layers. Zero Compromises.

Standard aquarium filter pads give you 6 or 8 layers. The KSY Aquatics 12D filter sponge gives you 12 — honeycomb mesh, high-density fiber, bio-sponge, and activated carbon layers stacked for mechanical, biological, and chemical filtration in a single 2.8cm pad.

Cut to Fit Any Filter

At 30 × 20cm (11.8 × 7.9 inches), this pad fits most hang-on-back, canister, and sump filters. Need a custom shape? Cut it with scissors — the layers stay bonded, no glue, no shedding. One pad covers multiple filter trays.

Reusable — Rinse and Repeat

Unlike disposable filter floss that clogs in a week, the 12D sponge can be rinsed and reused for 2-3 months before replacement. The open-cell structure traps debris without compacting, so water flow stays strong between cleanings.

Dual-Action Bacteria Cultivation

The yellow and blue bio-sponge layers provide massive surface area for beneficial bacteria colonization. More bacteria = more efficient ammonia and nitrite breakdown = fewer water changes. A mature 12D pad is a biological filter, not just a mechanical one.

Deodorization Built In

Integrated activated carbon layers absorb odors, tannins, and dissolved organic compounds that cloud your water. Crystal-clear, odor-free tanks without separate carbon bags.

Specifications