Why You’ll Love It
This hygger 256 sponge filter combines biofiltration, oxygenation, and physical filtration. It purifies the water and then flows back into the aquarium with oxygen. It can not only filter more efficiently, but also cultivate more beneficial bacteria for tanks 10–55 gallons. The water flow is adjustable, small, and slow without disturbing the tank inhabitants.
Key Features
Mechanical & Biochemical Filtration
The hygger biochemical sponge filter uses the rising air to generate a strong adsorption force on water. Through the sponge and bioceramic balls, it adsorbs and decomposes impurities, filtering and purifying water quality effectively.

Upgraded Stronger Adsorption Force
HG256 sponge filter adopts a vertical stripe design arranged perpendicularly to the water inlet holes, which has a greater filtration area and a stronger adsorption force for filtration. The bio-ceramic balls cultivate beneficial bacteria in water to degrade impurities.
Freely Replaced
Both sponge and bio ceramic balls can be replaced. You can easily take down the sponges to clean or replace (4 sponges included).
Porous bio-ceramic balls can be washed and reused. After being used for a period of time, they can be freely replaced with other filter media.

2 Installation Methods
All components of the hygger 256 biochemical sponge filter can be easily disassembled and assembled. It is equipped with 2 strong suction cups and 1 hang-on extendable plastic clip, offering 2 installation methods.
Easy To Use & Adjustable
The water outlet can be adjusted by rotating 360°, and the water outlet pipe can be extended; the T-shaped connector at the bottom can be adjusted 360°.
Usage Tips
2 Size For Choice:
Small double sponge filter is 6″ x 9″ x 14″, suggest for 10 to 40 gallon fish tanks.
Medium double sponge filter is 6.3″ x 9″ x 14″, suggest for 15 to 55 gallon fish tanks.
For a larger tank, you may need 2 of the filters.
Note:
- Please connect the air pump for use (the package does not include an air pump)
- You can clean sponges with aquarium water every 2 to 4 weeks.
- You can replace the sponge and bio ceramic balls with other filter media as needed.
- When the water outlet is below the water surface, it is in aeration mode; if the outlet is above the water surface, it is in small waterfall mode.
Specification

Package:
1 x Retractable outlet pipe with air tube connection
1 x Double sponge filter with media container
1 x Ceramic pearls
2 x Suction cup
2 x Sponge Replacement (In ceramic pearls container)
1 x Airflow regulating valve
1 x Fish tank filter support
1 x User manual




















Works great and easy to install. Maintains a clean water environment for my shrimp aquarium.
It’s a good filter. I love the filters hygger makes. They also give two free replacement sponges. It keeps my water clean and healthy.
I really like these sponge filters. I have several tanks and replacing all the filters with hygger sponge filters.
This product is everything I expected it to be and more, based on my research. The quality is A1, assembly, operation and effectiveness as advertised. Extremely satisfied. Thank you
Easy to set up, comes with extra sponges, works great and love the ability to adjust the rate of oxygen flowing through. My pleco and shrimp enjoy the sponges as well as a source of food overtime
Love this filter! Works great and comes with extra sponges. Fast shipping and great company.