coral causes too high a pH? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 08-25-2008, 02:54 PM Thread Starter
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coral causes too high a pH?

I have just finished aquascaping a 3 gallon nano planted tank and I used dried coral for the background. I have not added any water yet. It was suggested to me, though, that the coral may cause too high a pH for my intented inhabitants which would be a couple of neon tetras and some RCS. Is this true? If so, is there anything that I could do to counteract that
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post #2 of 6 (permalink) Old 08-25-2008, 04:09 PM
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Coral raises PH. It depends on how much you are adding but the best thing to do if you are worried it to not add it.
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post #3 of 6 (permalink) Old 08-26-2008, 03:05 PM
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Coral also increases your GH (hardness). It takes time for both (pH and GH) to go up, but it will be measurable. In the interest of stable parameters, I would suggest avoiding it. If you don't mind the parameters moving between water changes (which will probably happen in a nano anyway), then leave it in.

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post #4 of 6 (permalink) Old 08-26-2008, 03:14 PM
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In my experience coral will raise your PH to about 8.0. If you want it any lower than that do NOT add it.

I use a small amount of crushed coral to keep my PH steady at about 7.0. But I have a 125 gallon aquarium and inject Co2. It takes a month or so to get your PH exactly where you want it going this method.

Best of luck,
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post #5 of 6 (permalink) Old 08-27-2008, 12:37 PM Thread Starter
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OK, what I think I'm gonna do is just do weekly 25 to 30% water changes, set up DIY CO2 injection and keep an eye on things for now. Thanks for the responses.
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post #6 of 6 (permalink) Old 08-27-2008, 01:11 PM
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Are you using tap water here in MI?

If so, my PH is 8.0 and coral seems to only buffer up to 7.8 or 8.0, so you would not have any issues as it would not likely raise your PH
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