The process by which plants use light energy to collect carbon dioxide from the atmosphere and convert it to chemical energy in the form of sugar.
The elements needed by plants for normal growth and health. The major nutrients (MACRONUTRIENTS) are nitrogen (N), phosphorus (P), and potassium (K), but there are numerous MICRONUTRIENTS (also called TRACE ELEMENTS) which also have integral roles in maintaining plant health. A good quality hydroponic nutrient formula will contain all of the major nutrients and micronutrients needed by the vast majority of plants.
Sand or volcanic glass which has been expanded by heat; perlite holds water and nutrients on its many irregular surfaces. Mineral soil amendment.
The container in a hydroponic system which holds nutrient solution in reserve for use.
Sexual propagation: to produce seed by breeding different male and female flowers. Asexual propagation: to produce plantlets (also known as CLONES) by taking cuttings.