Photo 1 of Smart pH ORP Controller, 3 in 1 Aquarium pH Monitor Wi-Fi for pH/ORP/Temp Measurements in Water with Calibration, Can Fit with CO2 Bottle & O3 Generator

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Photo 1 of Smart pH ORP Controller, 3 in 1 Aquarium pH Monitor Wi-Fi for pH/ORP/Temp Measurements in Water with Calibration, Can Fit with CO2 Bottle & O3 Generator