Help!! Question about my KH, GH and plants - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 08-05-2011, 07:58 PM Thread Starter
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Help!! Question about my KH, GH and plants

Hello everyone....I'm new to The Planted Tank however, I have had a planted tank for almost 1 year now. However, recently I am noticing a bit of a problem. I am finding that my pH is actually dipping quite low into the 5.5-6 range within my tank. I have tested my water from the tap: pH-7.0, GH 2.24, KH 0.56.....the GH and KH in the tank remain the same but the pH is usually in the 5.5-6 range. I am doing a injected CO2 obviously, which usually ranges in the 20-30ppm. I know the problem here is my buffering capacity, as I seem to have none. The question I am having is....would it be viable to add about a 2 lb piece of Texas Holy Rock to the aquarium and continue to use the CO2, with ferts and lights etc, and have a more stable pH......I'm hlooking to stay in the 6.5-7.5 range....let me know what you think, if you have any ideas, or need more info!!

Thanks!!!
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post #2 of 8 (permalink) Old 08-05-2011, 08:33 PM
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I've posted in your other thread on 'water parameters'.
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post #3 of 8 (permalink) Old 08-05-2011, 09:43 PM
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[QUOTE=Gafi;1468897... I have tested my water from the tap: pH-7.0, GH 2.24, KH 0.56.....the GH and KH in the tank remain the same but the pH is usually in the 5.5-6 range. ...[/QUOTE]

I'd say that unless your keeping fish or other livestock that require extremely soft water, your GH and KH are low.

Everyone one is different, but I usually have my GH about 6.0 and KH about 4. GH can be raised using any of the GH builder products out there. KH can be raised with baking soda. In all cases raise the levels slowly. The good part is that these additives are comparatively inexpensive.
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post #4 of 8 (permalink) Old 08-05-2011, 09:47 PM Thread Starter
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is it possible to have low GH and high KH?
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post #5 of 8 (permalink) Old 08-05-2011, 09:51 PM
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Quote:
Originally Posted by Gafi View Post
is it possible to have low GH and high KH?
yes


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post #6 of 8 (permalink) Old 08-05-2011, 09:56 PM
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I suggest raising the KH to 1 dKH or a bit higher. That will stabilize the pH adequately. It makes no difference if it is stable at 5.5 or 6.5 or 7.5. And, that small increase in KH can safely be done in one step.

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post #7 of 8 (permalink) Old 08-05-2011, 09:57 PM
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I suggest raising the KH to 1 dKH or a bit higher. That will stabilize the pH adequately. It makes no difference if it is stable at 5.5 or 6.5 or 7.5. And, that small increase in KH can safely be done in one step.
yup!, thanks Hoppy for the support


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post #8 of 8 (permalink) Old 08-05-2011, 10:28 PM
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is it possible to have low GH and high KH?
0 dGH and 22+ dKH in my tap water!


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