Ph 7.9 i think first measuring was not ok, in holland it is forbidden the taylor testkit.
I have the Scuba 2 and the BSI pool test kit it is diffecult, now the Ta is 87 and Ph 7,9
I bring my Ph a little bit down
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Shal i wait to bring ph down till tommorow or shal i do it now (15 min ago i put in baking soda???stuppid i now) (thanks for helping duraleigh), and Yes i using poolmath