RS Electrical RS-04B Air-Operated Aquarium Filter

The RS Electrical RS-04B Air-Operated Aquarium Filter is a compact and efficient bio-sponge filter designed for small fish tanks and bowls. Powered by an external air pump, it provides reliable mechanical, biological, and chemical filtration while promoting oxygenation for a healthier aquatic environment.

Key Features

• Air-operated design – works with an external air pump (not included).
• 3-stage filtration – mechanical, biological, and chemical.
• Activated carbon removes odors and impurities.
• Improves water clarity and oxygen levels.
• Ideal for small tanks and bowls (10–50L).
• Easy to clean and maintain.

Specifications

• Brand: RS Electrical
• Model: RS-04B
• Type: Air-operated bio-sponge filter
• Power Source: External air pump (required, not included)
• Filtration Stages: Mechanical, Biological, Chemical
• Filter Media: Sponge + Activated Carbon
• Recommended Tank Size: 10–50 Liters
• Applications: Small aquariums, betta tanks, shrimp tanks, fish bowls
• Maintenance: Rinse sponge and replace carbon every 6–8 weeks