Biochemical Sponge Filter with Suction Cup – Aquarium Fish Tank

Keep your aquarium water crystal clear with this Biochemical Sponge Filter — a reliable, easy-to-install filtration solution designed for fish tanks of all sizes. Featuring a dual-action design, the dense sponge media supports both mechanical and biological filtration, helping beneficial bacteria colonize and thrive while trapping debris and waste particles for cleaner, healthier water.

The included suction cup mount makes installation a breeze — simply attach it to the inside wall of your tank for a secure, stable fit. Compatible with standard aquarium air pumps, this sponge filter promotes gentle water circulation and oxygenation, making it an excellent choice for fish fry tanks, shrimp tanks, betta setups, and community aquariums. Available in 4 color options to complement your aquascape aesthetic.

Key Features

• Dual Biochemical Filtration: Sponge cotton media captures debris while hosting beneficial bacteria colonies for a balanced aquatic ecosystem.
• Suction Cup Mount: Securely attaches to any smooth tank surface for hassle-free, stable placement.
• Promotes Oxygenation: Works with an air pump to increase water circulation and oxygen levels throughout the tank.
• Gentle Flow: Safe for delicate fish, shrimp, and fry — no strong currents that could harm small or sensitive aquatic life.
• Easy Maintenance: Sponge is simple to remove, rinse, and reuse — no need for frequent filter media replacements.
• 4 Color Options: Choose from multiple colors to match your tank's style and décor.
• Wide Compatibility: Suitable for freshwater and coldwater aquariums of various sizes.

Product Specifications

• Material: High-density biochemical sponge cotton
• Mounting: Suction cup (included)
• Compatible With: Standard aquarium air pumps
• Available Colors: 4 options
• Application: Freshwater fish tanks, shrimp tanks, breeding/fry tanks
• Brand: Qme

Why Biological Filtration Matters

Biological filtration is one of the most important elements of a healthy aquarium. By providing a porous surface for beneficial bacteria to colonize, sponge filters help convert harmful ammonia and nitrite into less harmful nitrate — a process known as the nitrogen cycle. Learn more about maintaining a healthy aquatic environment at the U.S. Fish & Wildlife Service – Fisheries.

What's in the Box

• 1 × Biochemical Sponge Filter Cotton
• 1 × Suction Cup Mount

Frequently Asked Questions

Q: What size aquarium is this biochemical sponge filter suitable for?

A: This sponge filter is designed for small to medium-sized aquariums and is especially well-suited for shrimp tanks, betta tanks, fry/breeding tanks, and community fish tanks. It works best paired with a standard aquarium air pump (sold separately) to drive water through the sponge media.

Q: How does the suction cup mounting work?

A: The included suction cup attaches firmly to the smooth interior glass or acrylic wall of your fish tank. Simply press the suction cup against the surface and it will hold the sponge filter securely in place, keeping it submerged at the correct depth for optimal water flow.

Q: How do I clean and maintain the sponge filter?

A: To maintain your sponge filter, remove it from the tank and gently squeeze and rinse the sponge in a bucket of aquarium water (not tap water) to preserve the beneficial bacteria colonies. Avoid using soap or hot water, as this will destroy the bacteria. Rinse every 2–4 weeks depending on your tank's bioload.

Q: Does this filter require electricity to operate?

A: The sponge filter itself is passive — it requires an air pump (not included) connected via airline tubing to draw water through the sponge. The air pump provides the flow and oxygenation. This makes it a very energy-efficient filtration option for most home aquariums.