Double Sponge Biological Aquarium Filter
Maintain crystal-clear water and a healthy aquatic environment with this Double Sponge Biological Aquarium Filter. Designed for freshwater aquariums, this air-powered filter provides both mechanical and biological filtration, making it an excellent choice for shrimp, bettas, nano fish, fry, breeding tanks, and community aquariums.
The dual sponge design creates a large surface area for beneficial bacteria to colonize, naturally breaking down harmful ammonia and nitrites while trapping debris and uneaten food. The gentle water flow is safe for delicate aquatic life, making it ideal for shrimp colonies, baby fish, and slow-swimming species.
Unlike traditional power filters, this sponge filter provides excellent filtration without creating strong currents, helping maintain a stress-free environment while increasing dissolved oxygen throughout the aquarium.
Features
✔ Dual high-density sponge design for superior mechanical and biological filtration
✔ Large surface area encourages beneficial bacteria growth
✔ Gentle water flow safe for shrimp, fry, bettas, and nano fish
✔ Improves water clarity and overall water quality
✔ Promotes oxygen exchange throughout the aquarium
✔ Quiet air-powered operation (air pump required, sold separately)
✔ Easy to remove, clean, and reuse
✔ Ideal for breeding tanks, quarantine tanks, and planted aquariums
Available Sizes
Small
- Sponge Height: 3.2 Inches
- Recommended Aquarium Size: 5–20 Gallons
Large
- Sponge Height: 4.5 Inches
- Recommended Aquarium Size: 29–40 Gallons
Perfect For
- Freshwater Aquariums
- Shrimp Tanks
- Betta Tanks
- Nano Aquariums
- Fry Grow-Out Tanks
- Breeding Tanks
- Community Aquariums
- Quarantine Tanks
- Planted Aquariums
BK's Paws Promise
BK's Paws Promise: We stand behind every product we sell. If you're not completely satisfied with your purchase, we're here to help with our hassle-free return policy.
