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文章: 41
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 于 2003-11-06 11:59    
Brother, I use those bio-ring before and have the same problem as you.
Then I visited the web site of SEACHEM and found many useful material to replace bio-ring, check this link :
www.seachem.com
select product name MATRIX
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Some description :
Matrix™ is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrix™ is a porous inorganic solid about 10 mm in diameter. Each liter of Matrix™ provides as much surface (<162 m) as 40 liters of plastic balls! Plastic bio-materials provide only external surface area, whereas Matrix™ provides internal macroporous surface area. These macropores are ideally sized for the support of nitrifying and denitrifying bacteria. This allows Matrix™, unlike other forms of biomedia, to remove nitrate along with ammonia and nitrite, simultaneously and in the same filter. Matrix™ is completely inert and will not breakdown. It need not be replaced. Use 1–2 Liters of Matrix™ for each 100 gallons. Since the majority of the bacteria are internal, Matrix™ may be rinsed when needed without damaging the filter. Matrix™ is compatible with all types of wet or wet-dry filters. Marine or freshwater use.
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you can found in MongKok Fish Street, and it improve water quality very much.
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