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Home » Aquarium Supplies » Filter Cartridges » Rena FilStar » FCAF-731A
Product:  FilStar BIO-Chem Stars [20 Ct]
Item Number:  FCAF-731A

Description:  Bio-Chem Stars are a biological filtration medium that provides a substrate for the optimal growth of beneficial bacteria. Their internal pore structure is formed under a patented process that creates a 50-70 micron internal pore network. This pore size is optimal for the growth of beneficial bacteria, including nitrifying bacteria that remove toxic ammonia and nitrite.

This item is eligible for Quantity Discounts as shown below:

Quantity1+3+ 6+ 12+ 
Price for each$15.24$14.48$13.72$12.95
Your savings- 5%10%15%


Qty:     Reviews

Additional Information


  • Biological filtration medium provides a substrate for the optimal growth of beneficial bacteria.

  • Provides more growing area than plastic balls, foams or undergravel filters

  • Advanced polymer material has optimal pore size for maximum oxygen and water transfer

  • Grows massive colonies of beneficial bacteria.

  • 20 stars support up to a 379 L (100 U.S. gallon) aquarium

  • Directions for use in Rena FilStar Filters:

  • Remove Bio-Chem Stars from plastic bag and rinse thoroughly to remove any dust.

  • Place Bio-Chem Stars in the last (top) compartment in the FilStar filter.

  • Bio-Chem Stars will become colonized by bacteria within several weeks.

  • Because Bio-Chem Stars do not break down or clog, they may be used indefinitely. Continuous water flow is necessary to maintain living colonies of bacteria.

  • Visit Manufacturer's Web Site
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