Discover the Hanna Instruments GroLine Hydroponics Waterproof Tester, an essential tool for hydroponics and aquaponics enthusiasts. This versatile EC/TDS tester features automatic calibration and an integrated temperature sensor, all showcased on a clear LCD display. Designed for accurate readings in various growing mediums, it's perfect for both home gardeners and professional growers. Choose the ideal tester for your needs and ensure optimal plant growth with reliable monitoring.