Thread: Very High Boron
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Old 09/06/2019, 12:36 AM   #5
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Some pH buffers, like SeaChem Marine Buffer, have a fair amount of boron in the form of borate, which will raise pH a bit. It's possible that the reading is in error, as well. Testing for boron is difficult. A 10% water change will lower the reading only by 10% in the very best case, and possibly not at all if the salt mix has excessive boron.

Jonathan Bertoni
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