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You're thinking too much.
Fill up to the first line with pool water.
Add CYA reagent until level of liquid (H2O+reagent) gets to top line.
Shake then wait at least 30 seconds.
Fill CYA test tube at waist level until black dot completely disappears while looking in from the top.
It seems that you were doing it correctly in the begining. You may not have any CYA. What was it last year when you closed?
Last edited by DavidD; 04-04-2006 at 07:50 PM.
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