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Hydroponics Glossary
 

AERATION
Supplying soil and roots with air or oxygen. Geolite is an example of a medium with excellent aeration. In some hydroponic systems, a nutrient solution is aerated by the output of an aquarium pump.

AEROPONICS
A system in which the roots of a plant are consistently or intermittently misted with fine droplets of nutrient solution.

ACID
Refers to medium or nutrient solution with a low pH; an acidic solution has a pH below 7.

ALKALINE
Refers to medium or nutrient solution with a high pH; any pH over 7 is considered alkaline.

BLOOM BOOSTER, BLOSSOM BOOSTER
Fertilizer high in phosphorus (P) that increases flower yield.

BORON (B)
The function of this micronutrient is not well understood, but it is suspected that it might aid carbohydrate transport.

BURN
Leaf tips that turn dark from excess fertilizer and salt burn.

CALCIUM (Ca)
Calcium is vital in all parts of plants to promote the translocation of carbohydrates, healthy cell wall structure, strong stems, membrane maintenance and root structure development. Calcium is a macronutrient.

CARBON DIOXIDE (CO2)
A colorless, odorless, tasteless gas in the air necessary for plant life. Occurs naturally in the atmosphere at .03%.

CHLORINE (Cl)
This micronutrient is essential for photosynthesis, where it acts as an enzyme activator during the production of oxygen from water.

CHLOROSIS
The condition of a sick plant with yellowing leaves due to inadequate formation of chlorophyll. Chlorosis is caused by a nutrient deficiency, usually iron or nitrogen; nutrient deficiencies are themselves often caused by a pH that is out of the acceptable range.

 
 
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