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Made in Germany
0 in saltwater (higher than competing products)
or decaying
aluminum oxide is not easily absorbed into the cell to cause negative reactions
it is recommended to combine the pellets with standard phosphate adsorbents
sera siporax professional reef sand Made in GermanySera siporax is a fully biological filter material for all internal, external and trickle filter systems, and for garden pond filters. 1 liter sera siporax provides as much settling area for bacteria as approximately 34 liters of ceramic filter material. Therefore 1 liter sera siporax ensures more than 200 liters of biologically clean aquarium water. Sera siporax is an excellent choice for small filters. Prefilter with sera biofibres or sera filter