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- Pool Industry Leader
- Posts: 2381
- Joined: Thu 21 Jun, 2007 21:27
- Location: San Rafael, California
False low reading on the chlorine
Stop relying on ORP since it is not accurate or if it is at least consistent then calibrate it against a proper test kit (see Test Kits Compared for two good test kits.
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- Pool Industry Leader
- Posts: 2381
- Joined: Thu 21 Jun, 2007 21:27
- Location: San Rafael, California
False low reading on the chlorine
Call the manufacturer, Hayward.
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