To: aquatic-plants at actwin_com
Subject: pH test
From: WILFRED M MILES <PFWMM at acad2_alaska.edu>
Date: Fri, 26 May 1995 06:26:28 -0800
MR-Received: by mta ORION; Relayed; Fri, 26 May 1995 06:26:28 -0800
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?