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This is a discussion on AC Water Run-Off for orchids? within the General Orchid Culture forums, part of the Orchid Culture category; Originally Posted by Halloamey I would first check for pH, dissolved solids and concentrations of ...
Also the NaOH and acidic water were two different scenarios, there could be NaOH or acidic water and metal chelation phenomenon. Also NaOH is a strong base and not a buffer so if it is present in the condensate the dissolving of CO2 from air will not be sufficient to bring back the pH to 7.