Biochemical Sponge Filter for Small Fish Tanks 5–50L

1Pc Biochemical Sponge Filter Fish Tank Filter Small Aquarium Filter Cotton Air Pump Skimmer Filtration Aquatic Pets Supplies Qme 1

Biochemical Sponge Filter for Small Fish Tanks 5–50L

$16.78

$16.78 $19.93

Biochemical Sponge Filter for Small Aquariums

Keep your aquatic world clean and thriving with this compact Biochemical Sponge Filter — an essential addition to any small fish tank or aquarium holding 5 to 50 litres. Designed to work with a standard air pump, this dual-action filter provides both mechanical and biological filtration, trapping debris while cultivating beneficial bacteria colonies that help maintain a healthy, balanced aquatic environment.

Whether you're setting up a betta tank, a shrimp colony, a fry nursery, or a small community aquarium, this sponge filter delivers reliable, low-cost performance without the strong suction that can harm delicate fish or invertebrates.

Key Features

Dual filtration: Mechanical filtration removes particles; biological filtration supports a thriving colony of beneficial bacteria
Ideal tank size: Suitable for tanks ranging from 5 to 50 litres
Compact dimensions: 5.0 × 7.5 cm (1.97 × 2.95 in) — fits neatly in small and nano tanks
Gentle water flow: Safe for fry, shrimp, and slow-moving fish species
Durable materials: Constructed from high-quality plastic and fine-pore sponge for long-lasting use
Easy to maintain: Simply rinse the sponge in tank water during regular water changes
Air-pump driven: Works with most standard aquarium air pumps (air pump sold separately)