Is pH important in hydroponics?

The control of pH is extremely important, not only in hydroponics but in soil as well. Plants lose the ability to absorb different nutrients when the pH varies. (This topic is answered in much greater detail in the "mini-class" on pH in Hydroponics).

The ability to quickly and easily test and control pH in hydroponics is a major advantage over dirt gardening, where testing and adjusting the pH is much more complicated and time consuming.