Growduino 

is a system based on the Arduino platform, created for a complete remote control and monitoring of closed indoor growing areas such as growrooms and greenhouses...


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Calibration

On this page You can properly calibrate EC, pH and CO2 sensors. It's two-point calibration, there is also an offset for EC for measuring very low EC values like clean water.

The calibration process itself is as easiest as can be, all You need is standard calibration solutions.