The heart of a filter is its filter sponges: Filter sponges not only complete classic filtration, but also offer the smallest bacteria a lot of living space. This biological oasis in the filter sponges ensures that the toxins produced in the pond are converted: In the blue sponges toxic substances are converted into harmless algae stimulating substances (nitrification), which in turn are converted into naturally occurring gases in the red sponges (denitrification).
These sponges are for Oase FiltoClear pond pressure filters. 3000, 6000, 12000, 16000, 20000 and 30000. The sponges for the largest 2 sizes are interchangeable
- Significant load capacity with high dimensional stability
- Constant and regular water flow thanks to a fixed pore size
- 100% compatible with animals, plants and microorganisms
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