ADA Amazonia not lowering Ph. - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 11-02-2012, 10:39 PM Thread Starter
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Exclamation ADA Amazonia not lowering Ph.

I have a 3 months old 20G tank using ADA amazonia soil. I used tap water to cycle the tank for about 6 weeks. Then I do a couple of water changes with RO water. My RO water parameters: Ph 6.0, GH:1-2, KH:0-1, TDS:20. This tank still have a Ph of 7.0-7.2. It is really frustrating. No matter what I do, the Ph is still the same. I have only moss in this tank. Anyone experience the same problem with Aqua Soil? .

Last edited by skygb000; 11-02-2012 at 10:39 PM. Reason: typo
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post #2 of 9 (permalink) Old 11-02-2012, 10:44 PM
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Do you have any rocks, crushed coral, or anything that could be raising the pH?
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post #3 of 9 (permalink) Old 11-02-2012, 10:47 PM Thread Starter
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No . I have only Aqua Soil and some peacock moss. I use a 2215 for this tank.
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post #4 of 9 (permalink) Old 11-02-2012, 11:34 PM
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How much soil is there? Needs to be about 3 inches in the bottom for good buffering.

Also, what are you using to measure pH?
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post #5 of 9 (permalink) Old 11-02-2012, 11:47 PM
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Mine has lowered it a bunch

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post #6 of 9 (permalink) Old 11-02-2012, 11:53 PM
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As Liam asked, how much did you use? a 20gal tank, will use at least a 9L bag to get 2-3" depending on how much it packs down, 3 bags for 2x20gal for a good depth.

20g platy, , 2 x 10g shrimp, 3 x 20g shrimp, 7.5g shrimp and 1 great dane/mastiff puppy.

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post #7 of 9 (permalink) Old 11-02-2012, 11:54 PM
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Quote:
Originally Posted by mordalphus View Post
How much soil is there? Needs to be about 3 inches in the bottom for good buffering.

Also, what are you using to measure pH?
If hes using RO water, I don't think that would matter. I assume his kH would be less than 1 and his pH would not rise to 7 even with no substrate.


Sky,

Not to be redundant but theres no rocks are any other hardscape is there? That could possibly leach carbonate which would in turn raise your pH.

Do a big water change with RO water and make sure that it is at 6 pH. Then test the tank to see if the pH will go down. Then wait a day and see if theres any changes. If the pH is still at 7 and you eliminated any other source for kH, then your aquasoil might be a defective batch. Also is it reused aquasoil?

I'm not a doctor in real life but I play one on this forum


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post #8 of 9 (permalink) Old 11-02-2012, 11:55 PM
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Is your tank all RO or all tap? I only used a 9L bag in my 20L, so I have a very shallow layer. Even then, it buffers it down to below 6, but I use all RO water.
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post #9 of 9 (permalink) Old 11-03-2012, 01:06 AM Thread Starter
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This is not the first time I use Aqua Soil. All of my previous tanks never had this issue.
It's a brand new bag of AS. I checked my KH. It's 7.
But my RO water have a KH of 2. How's it possible to go up to 7? Is there any other way to lower KH beside adding RO water?
I did many water change with RO water. It's been 3 months already . And yet Ph is still 7.

I found a similar thread with the same issue on shrimpnow: http://www.shrimpnow.com/forums/show...ot-lowering-ph

I used API test kit and digital one to test Ph.

I really appreciate your helps.
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