LEE’S Bio Pin Balls Small 450


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Lee’s Bio Pin Balls are state of the art filter media for use in fresh and salt water wet/dry systems. They may be connected together or randomly placed in the filter box. Bio-Pin Balls help produce turbulence, aiding in the gas-exchange process. The void space between the Bio-Pins is ideal for the movement of gasses like oxygen and allows it to more-readily come in contact with nitrifying bacteria living on the media surface. Biological filtration is the process by which waste is broken down from toxic ammonia to less toxic nitrates.

Suggested usage for Lee’s Bio-Pin Balls;

1 litre of Balls for 5.2 litres of salt water
1 litre of Balls for 9.3 litres of fresh water.

  • Small bio ball 35mm Diameter
  • 60 Balls is 2 Litres
  • Each Bio-Pin Ball has 110 Bio-Pins (drip points).
  • There are approximately 30 balls per litre.
  • 30 cm3 of media has approximately 12 m2 of surface area.



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