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#2
March 25th 05, 01:37 PM
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It's normal for the ph of a planted tank to increase dramatically while the
lights are on if you are not adding co2. Check it again after the lights have been out all night right before they come on again. I am not 100% sure of all of the causes, but here one contributing factor is the plants are using up all of the co2 decreasing the buffering capacity and increasing the ph slightly. also when the plants run out of co2 they start breaking down bicarbonate to get the carbon they need and this also raises the ph. -- Margolis http://web.archive.org/web/200302152...qs/AGQ2FAQ.htm http://www.unrealtower.org/faq 
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