Pre-Filter Foam Sponge Roll for Aquarium Filter Intake (Large, 4-Pack)

4-pack, large foam pre-filters shield shrimp and small fish from intake suction, reducing risk of injury.

Internal hole diameter 2.0 cm fits common filter tubes; simple push-on installation for quick setup.

BPA-free foam ensures non-toxic contact with water, preserving overall tank health in both freshwater and saltwater.

Enhances biological filtration by providing a porous surface for beneficial bacteria to colonize, improving water quality.

Low-maintenance design; rinse or soak to clean and reuse, extending filter life while keeping debris out of the pump.

Helps prolong the life of filter media by trapping debris upstream, reducing clogs and maintenance downtime.

Versatile for shrimp tanks, breeding setups, and small tanks seeking added intake protection without bulky hardware.

Potential flow restriction in high-debris or high-flow setups; monitor flow and clean more frequently.

Clogs can accumulate quickly in dirty tanks, requiring more frequent replacement or cleaning than standard sponges.

Not universally compatible; verify filter intake diameter (2.0 cm hole) with your model before purchase.

Density and pore size may vary between batches, which can affect water flow and filtration efficiency.

Some users report size or fit differences versus OEM parts; ensure your filter brand accommodates this sponge size.