pH of RO/DI water - Canreef Aquatics Bulletin Board

#10

02-03-2012, 06:43 PM

ScubaSteve ScubaSteve is offline

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Join Date: Nov 2009

Location: Vancouver

Posts: 1,591

When my water comes out of my lab RO/DI the pH is usually pretty close to 7 (6.8-6.9) but within 5 to 10 mins the pH drops to 6 simply due to CO2 dissolving into the water. There's no need to worry about it though. If your wanting to keeptue top water close in pH, add a tiny bit of Kalk to buffer it.

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