Niwa CO2 Sensor water reservoirs so a prep room can

so a prep room can run several with the lids marked in non-permanent marker

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Niwa CO2 Sensor water reservoirs so a prep room canNiwa CO2 Sensor The Niwa CO2 Sensor is an essential accessory for any serious grower using the Niwa Grow Hub system. Designed to be fully compatible with all Grow Hub models, this sensor does NOT work as an independent sensor. Once you receive your CO2 sensor, you'll simply replace your existing sensor module with your new CO2 sensor module. This means you can continue to receive all the preexisting readings you had before (VPD, temperature, relative