PH Test Pen
DescriptionAccurately measure PH levels in your aquarium using this digital PH pen. This is particuarly useful when injecting CO2 for measuring PH drops during CO2 injection periods.
Included are intructions and batteries. Ready to use.
The readings will flutuate when the pen is out of water. Dip in aquarium water for 30 seconds before taking a reading.
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