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PH/PPM/TDS/EC TESTER/CONTROLLER.
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- pH is for testing pH balance, how acidic or how alkaline your water or nutrients are
- PPM -- Parts per million for measuring food level
- TDS -- Total Dissolved Solids -- measure food/nutrients levels
- EC -- Electro Conductivity-- measure food/nutrients levels
PH/PPM/TDS/EC Tester/ Controller
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