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Old 11/30/2017, 05:49 PM   #265
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Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
Dosing water for changes with a mineral acid is fine if you watch the pH and aerate the water sufficiently before adding it to the tank. The pH should bounce back up fairly quickly, but if you are making large water changes, I think it's worth making sure that the pH is acceptable when the change is done.

Jonathan Bertoni
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