Thread: Tropical fish keepers - Carbon or no carbon?
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Old Dec 6, 2008 | 10:12 PM
  #25  
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e30cossie
E36 cosworth
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Joined: Dec 2005
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From: bedfordshire
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I have carbon filters in my tank and all is good but i have just brought an external pump and it has white stones in there whatever they are.

Here is a picture of my tank.


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