Tag: ph

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Choosing a Hydroponic System

Hydroponics is a soilless growing method where plants receive a water-based nutrient solution,[1] giving growers precise control over the growing environment and inputs like water, nutrients and oxygen. Several hydroponic systems—varying in size, complexity and efficiency—are available. These setups can be: Open or closed: Open systems discharge the nutrient solution after use. Closed systems recirculate the nutrient solution for reuse. Active or passive: Active systems use pumps to deliver the nutrient solution to plants. Passive (e.g., wick) systems give roots …
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Optimizing pH in Hydroponics

The acidity or alkalinity of a liquid is measured as pH. A low pH indicates high acidity, while a high pH indicates high alkalinity. More concretely, pH—short for “potential of hydrogen”—reflects the concentration of hydrogen ions. When acids dissolve in water, they release H+ ions, lowering the pH. Bases release OH- ions, raising the pH. The pH scale ranges from 0 to 14, with 7 being neutral (Figure 1). Figure 1. pH scale. Acidic solutions have a low pH. Alkaline solutions have a high pH. Neutral …
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