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pH test
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To: aquatic-plants at actwin_com
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Subject: pH test
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From: WILFRED M MILES <PFWMM at acad2_alaska.edu>
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Date: Fri, 26 May 1995 06:26:28 -0800
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Alternate-recipient: prohibited
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Hop-count: 1
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MR-Received: by mta ORION; Relayed; Fri, 26 May 1995 06:26:28 -0800
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X400-MTS-identifier: [;82626062505991/4798684@ORION]
I have been folowing the discussion about water chemistry with interest.
I use R/O water with 7pH and test with Aquarium Pharmaceutical using
bromothymal blue that is over a year old. The test indicates initially
pH 7 then as it stands for several hours it shows more and more blue till I
get a reading near 8!
Question: How come? Which is my true reading?