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- Stock: In Stock
- Brand: Seaoura
- Model: SR-703
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The Seaoura SR-703 is a K1 fluidized bed aquarium filter that combines mechanical and biological filtration in a compact internal unit. The movable K1 media is constantly moving in the filter chamber, which increases oxygen contact and promotes the development of beneficial nitrifying bacteria.
This type of K1 fluidized bed filter is particularly suitable for aquariums with a higher biological load - discus, cichlids, densely populated freshwater aquariums or systems with intensive feeding. In addition to biofiltration, the model also offers mechanical waste retention through sponge and ceramic media.
How does the K1 fluidized bed filter work?
In moving bed filtration, the K1 media is kept in motion by the water flow and air bubbles. This creates a large active surface for bacteria and improves oxygen exchange. As a result, the filter processes ammonia and nitrite more efficiently and supports a more stable nitrogen cycle.
Compared to conventional internal filters, the K1 fluidized bed filter offers better biological performance and a lower risk of clogging of the biomedia.
Benefits for the aquarium
More stable biofiltration
The movable K1 media supports an active bacterial colony and more efficient breakdown of ammonia and nitrite.
Cleaner water
The combination of sponge and biomedia retains mechanical waste and supports biological purification.
Improved aeration
The built-in air flow increases dissolved oxygen - important for discus and sensitive species.
Compact internal design
No external canister required; the filter is easily mounted inside the aquarium.
Suitable for higher loads
A good choice for aquariums with more fish, frequent feeding or species with larger biological waste.
Instructions for use
1. Installation
Attach the filter to the inner glass with the suction cups and position the outlet so that it provides good circulation.
2. Start-up
Fill the aquarium with water, turn on the filter and make sure that the K1 media moves freely.
3. Cycling
A new filter needs time to develop bacteria. Use starter bacteria or transfer some of the old media if possible.
4. Maintenance
Rinse the sponge every 2–4 weeks in separated aquarium water. Do not wash the K1 media with tap water as this will kill the bacteria. Monitor the water parameters with water tests.
5. Flow control
If the fish prefer a weaker flow, direct the jet towards the glass or use decorative elements for diffusion.
Problem → Solution
Problem | How SR-703 helps | |
|---|---|---|
High nitrites or ammonia | K1 moving bed increases the active bacterial surface. | |
Insufficient aeration | Built-in airflow improves oxygen exchange. | |
Frequent filter clogging | The moving media is partially self-cleaning through movement. | |
Frequently Asked Questions1. What is the difference between a K1 moving bed and a regular internal filter?The main difference is the moving K1 media, which is constantly moving and provides a larger active surface for bacteria. This makes biological filtration more effective. 2. Can it be used in a planted aquarium?Yes, but you need to adjust the flow and aeration to the needs of the plants and the CO₂ system. With a strong CO₂ supply, excessive aeration can reduce its concentration. 3. How often should the filter be cleaned?The sponge is usually rinsed every 2–4 weeks in aquarium water. K1 media is not washed with tap water; clean only when necessary and carefully. |