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Old 11-05-2011, 05:44 AM   #1
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ph rise

why would my ph rise did my weekly check this morning normally at 7.4 has gone up to 8.6 what would cause this
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Old 11-05-2011, 06:09 AM   #2
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Some types of rock and other ornaments inside the tank can raise the pH.
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Old 11-05-2011, 06:31 AM   #3
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my ornaments have been in all the time ph has been steady only thing changed recently is that last week i introduced a co2 defuser which is plastic mmmm
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Old 11-05-2011, 10:29 AM   #4
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I would ask this question in the fw 'planted tanks' forum because you will get a better response. I dont fully understand the process but there is something called 'biogenic decalcification' which relates to GH & KH and your co2 system and how your plants utilize everything and the end result is a big jump in ph. I believe it has something to do with specific plant species & their production of carbonate. Someone with more plant & co2 experience will be able to explain whats going on (im still learning!)!! Good luck!
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