Yes, the device comes equipped with Automatic Temperature Compensation, which adjusts for any possible measurement errors caused by temperature changes, to make sure you receive more accurate pH readings.

This pH meter for water offers high precision in its readings, and it also includes the feature of Automatic Temperature Compensation to adjust for possible measurement errors, ensuring you get accurate pH readings between 0°C-60°C (32°F-140°F).

No, it's not mandatory to buy this digital pH meter for your growing process when using Hey abby hydroponic grow systems. Hey abby already provides an advanced, pre-mixed nutrient solution, and a feeding schedule to help balance the pH levels. This pH meter serves as an optional tool for growers who wish to closely monitor their plants' growing conditions.

1. Prepare buffer solutions (fill your cup with 250ml distilled water);
2. Set the meter to pH mode;
3. Insert the electrode into your buffer solution and wait a while for more stabilized testing;
4. Press and hold "CAL" for 5 seconds, then release the button;
5. Wait till the reading flashes 3 times and the calibration is done.
You can also find more details, and how to perform TDS/EC CALIBRATION (1413μS/cm Calibration) in the user's manual.