General Hydroponics pH Test Kit Emerald Harvest This product effectively corrects these

This product effectively corrects these common deficiencies without throwing off overall elemental balance

Plant-safe green backlit LCD with adjustable brightness and large

greenhouse

The Mondi Utility and Sump Pump is protected by a 2-year Gold Series warranty

General Hydroponics pH Test Kit Emerald Harvest This product effectively corrects theseGeneral Hydroponics pH Test Kits make pH testing easy. Simply fill a test tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease of use, which are important factors when the health of a valuable crop is at stake. Use 3 drops per 5ml of solution.