Bio Chem Stars® Filter MediaBio Chem Stars® are made from a porous polymer with a patented process that forms a very fine 50–70 micron internal pore network. Bacteria grow within the star, colonizing the entire structure. One Bio Chem Star® has 33 times more bacteria growing area than the leading plastic ball. The stars can be used to float on the water surface in external power filters, creating a wet/dry filter effect. Stars are 1" long and 1" in diameter. Packed 20 stars per box. Bio Chem Stars® is a registered trademark of Mars Fishcare North America, Inc. |
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