General Hydroponics® pH Test Indicator 8 oz Grotek A 4 ft fluorescent light

A 4 ft fluorescent light fixture will be perfect to provide supplemental lighting over this size area

Your Grodan® Starter plugs

50% stronger than the most popular brands on the market yet it costs the same

maintained by a shut-off valve

Use it to start fruiting plants like tomatoes

General Hydroponics® pH Test Indicator 8 oz Grotek A 4 ft fluorescent lightGeneral 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.