The KJI-2831 Dual Bio-Sponge Filter (also known as the #2831 Biochemical Filter) is an essential, high-performance filtration system designed for the delicate needs of all small to medium-sized aquariums. This air-driven filter provides a superior combination of mechanical and biological filtration while maintaining a safe, gentle, and highly oxygenated environment for your aquatic pets.

Key Features & Uses

• Dual-Action Filtration Power: The twin sponge design maximizes surface area for both mechanical filtration (trapping debris, waste, and floating particles for visibly cleaner water) and biological filtration.

• Biological Super-Surface: The porous, high-density sponge material is an ideal home for colonies of beneficial aerobic bacteria. These vital bacteria convert toxic ammonia and nitrite into harmless nitrate, ensuring a stable and healthy nitrogen cycle.

• Shrimp & Fry Safe (Breeding Filter): The gentle, low-current operation makes this filter perfect for sensitive aquatic life. It is the filter of choice for breeding tanks (guppies, killifish, dwarf cichlids), shrimp tanks (like Caridina and Neocaridina), and tanks housing delicate fish such as Discus, Bettas, and Angel Fish, as it will not suck in or harm fry or small invertebrates.

• Enhanced Aeration: When connected to an air pump (not included), the rising air bubbles efficiently oxygenate the water, improving overall water quality and fish health.

• Versatile Application: Use as a standalone filter for tanks up to approximately 40-50 liters (10-13 US gallons), as an auxiliary/secondary filter, or as a pre-filter for canister or power filters.

🛡️ Safety, Precautions & Maintenance

• Installation Safety: The filter features a weighted base and/or suction cups (depending on version) to ensure stable, upright placement on the aquarium bottom.

• Required Equipment: This is an air-driven filter and requires an external air pump and airline tubing (not included) to operate. Ensure the air pump is rated for your tank size.

• Maintenance Precaution: NEVER clean the sponge media with tap water, as the chlorine will kill the beneficial bacteria. Always rinse the sponges gently in old aquarium water removed during a water change.

• Cleaning Frequency: Clean the sponges periodically (every 4-6 weeks) when water flow diminishes. Avoid over-cleaning to preserve the bacterial colony.

• Longevity: Constructed from durable, high-quality plastic and long-lasting sponge material for reliable, continuous performance.

Buy the KJI-2831 Dual Bio-Sponge Filter available at Sahara Exotics largest pet & aquarium store in Ajman UAE