Dennerle Nano FilterTubes is a high-performance long-term filter medium. Large surface area offers ideal habitat for all important filtering bacteria. The filter material becomes. Biologically active after only a short period in use, efficiently degrading ammonium and nitrite. 
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        Dennerle Nano FilterTubes is a high-performance long-term filter medium. Large surface area offers ideal habitat for all important filtering bacteria. The filter material becomes. Biologically active after only a short period in use, efficiently degrading ammonium and nitrite.
Dennerle Nano FilterTubes:
- for crystal-clear aqaurium water
 - highly bio-active due to large surface area
 - special water-neutral ceramic material
 - suitable for fresh and sea water
 
 - for crystal-clear aqaurium water
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