Hydroponic pH & EC Control - Combination Meters

Combination meters have multiple probes and can read the pH, EC and temperature levels in a hydroponic system. They provide an easy way to monitor everything all at once. Most plants thrive best in the slightly acidic pH range between 5.5 to 6.0 and with an EC (electrical conductivity) range between 1.5 to 2.5. Please see our Complete EC & pH levels chart for hydroponic plants for more information.