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The EcoTechnics Evolution PPM controller can be attached to either CO2 regulator and solenoid valve or  propane gas burner to increase CO2 levels in your grow environment.
Gives accurate, long term readings with a range of 0-50,000 PPM. Easy to use and set up with only 3 buttons, self learning and auto tunes itself to avoid overdosing, solid state sensor (no probes).


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