[pH and EC Meter for Water Systems]: EC range of 500-2000 µS/cm is considered optimal for hydroponic gardening, and the optimal pH value is the slightly acidic range of 5.5-6.5; CIZTADAK pH EC meter provides the consistency and accuracy readings of your feedings in hydroponic garden system, to keep your plants balance and happy. | [pH and PPM Tester for Hydroponics]: Closely monitor pH and EC values while growing in plant. Check and adjust pH and PPM values in hydroponic nutrient solution. Widely used in water system hydroponics, greenhouse reservoir, DWC, aquaponics, RO water, drinking water, well water. | [4 in 1 Multifunction Tester]: The meter provides 4 essential measurements, ppm, EC, pH, and Temp, help to know the pH and EC PPM to feed your plants. A 4 in 1 meter that meets the needs of any serious grower. | [2024 Updated PPM and EC Meter]: The upgraded probe gives more stable readings, faster response times; more sensitive probe ensure the accuracy of the measurement results. Helps your hydroponic plants maintain balance. | [Professional Water Hydroponics pH Tester]: Automatic Temperature Compensation (32 to 122℉) keeps the reading consistent. Backlight design can also measure in dim environment. And it can be used for a long time, it is an economic choice from the long-term use.