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Old 05-10-2010, 10:46 AM   #1
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Most beneficial bacteria are in...

Just a question that has been boggling my mind....

if most beneficial bacteria are on the substrate, filter media, etc.... then why do we test the water column to monitor the levels?

no bearing here really... just something ive been wondering about.
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Old 05-10-2010, 10:51 AM   #2
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Probably because the fish are swimming around in the water and not the filter?
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Old 05-10-2010, 10:55 AM   #3
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Originally Posted by Andrewz00 View Post
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if most beneficial bacteria are on the substrate, filter media, etc.... then why do we test the water column to monitor the levels? ...
You're not directly monitoring the bacteria. You're monitoring the byproducts made by those bacteria - or in the worst case, the products that the bacteria *should* be consuming. And that stuff is in the water.
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Old 05-10-2010, 10:56 AM   #4
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Probably because the fish are swimming around in the water and not the filter?
i understand that the fish swim in the water....

the question is more along the lines of if the bacteria live on objects and not in the water... why dont we test substrates or "objects" inside the tank instead of the water?
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Old 05-10-2010, 10:57 AM   #5
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You're not directly monitoring the bacteria. You're monitoring the byproducts made by those bacteria - or in the worst case, the products that the bacteria *should* be consuming. And that stuff is in the water.

ahhh a real answer... thank you!
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Old 05-10-2010, 10:57 AM   #6
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The water column is what contains the ammonia, nitrites, and nitrates. The bacteria that feeds off those reside mainly in your filter media.

Edit: Apparently I am a slow typer.
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Old 05-10-2010, 10:57 AM   #7
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Well, we test the water because we are trying to keep the fish heathly right? Well, the fish are in the water, so we have to check the levels in the water.
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Old 05-10-2010, 11:03 AM   #8
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Meegosh: slow typer or not... more input/confirmation is always welcome in my book!

Thanks all!
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