KH Question - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 11-28-2006, 06:07 AM Thread Starter
 
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KH Question

Hi! All,

Is it possible to have the same KH value for tap water and the water in the aquarium injected with CO2?

Thanks in advance for your replies.
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post #2 of 4 (permalink) Old 11-28-2006, 06:09 AM
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Not only is it possible, that's the way it's supposed to be. Injecting CO2 will lower the tank's pH while leaving the kh unchanged.
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post #3 of 4 (permalink) Old 11-28-2006, 06:40 AM Thread Starter
 
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That means looking at the KH in isolation I will be unable to draw any conclusion about the CO2 level in the tank?

By the way, what's the best way to measure the pH level in the tank? I tried using a Hanna pH meter but its not working now. Is there any decent pH Test Kit which is avaibale for the same?
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post #4 of 4 (permalink) Old 11-28-2006, 07:23 AM
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Usually KH stays the same. BUT in some cases the KH can go up or down depending on rocks or substrate you use.

This should help you out.

Measuring CO2 levels in a Planted Tank


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