General Hydroponics Calibration Solutio pH Control Kit, 8 oz

<p>To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However, some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water, or pH unstable media - such as rock wool and gravel products - are used, and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop. pH Down: Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.</p>

General Hydroponics Calibration Solutio pH Control Kit, 8 oz

• Designed to work superbly in hydroponic environments, suitable for both soil-less mixtures and soil-grown plants
• Includes a pH Test Indicator tube: Fill the test tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid
• Contains an 8 oz bottle of pH Up, used to elevate pH levels to the desired range
• Includes an 8 oz bottle of pH Down, formulated with food-grade phosphoric acid to lower pH levels as needed
• For optimal results, regularly discard and replace hydroponic solutions