This article describes water and its characteristics used in hydroponics. If this is your first time getting acquainted with hydroponics, we recommend starting with the article ?What is hydroponics?? And also ?Nutrient solution for hydroponics?.
Water is a unique substance, with properties that no other substance has. For example, when it freezes, it will take up more space due to the capture of air bubbles than it occupied in the liquid state. That provides buoyancy to ice and protects from freezing layers of water under the ice cover. The lack of buoyancy in ice would lead to freezing of reservoirs to the very bottom. And life itself, as a result of chemical reactions taking place in water, would not be possible without it. Everyone knows its formula H2O. For one oxygen atom, there are two hydrogen atoms, which are interconnected weakly. That is two hydrogen atoms and one oxygen atom. Being in constant motion, the molecules easily exchange hydrogen atoms with other substances and with each other. A large difference in the size of the atoms of oxygen and hydrogen contributes to the formation of an angle between the atoms of hydrogen, which leads to the appearance of an electric charge on water molecules. This property allows water to react with a variety of other substances.
In the context of hydroponics, the following water characteristics are important: