Chapter highlights the importance of maintaining correct pH levels
within your hydroponics system using diagrams, charts, and 3 dimensional
CAD rendering, explaining in detail how differing pH levels allow different
nutrient elements to be absorbed at different rates, how water temperature
affects pH within your system, and explains the difference between hard
and soft water areas, therefore which nutrients would be applicable.
The chapter concludes with a photograph of a collection of digital CF
and pH meters.
