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Aquaponics Ch. 12 Vo

Acid A compound that yields hydrogen ions when dissolved in an ionizing solution.
Aeration The mixing of air and water by wind action or by air forced through the water; generally refers to a process by which oxygen is added to water.
Alkaline Basic, pH greater than 7.
Beer's Law The light passing through a colored liquid decreases as the concentration of the substance dissolved in the liquid increases.
Buffer Any substance in a solution that tends to resist pH change by neutralizing any added acid or alkaline. A chemical that by taking up or giving up hydrogen ions sustains pH within a narrow range.
Cations Positive ions and examples are calcium, potassium, magnesium, and sodium.
Colormetric Determining the Quantity of a substance by the measurement of the intensity of light transmitted by a solution of the substance.
Conductance The ability of a substance to allow the passage of electrical current.
Dissolved Oxygen The amount of elemental oxygen, oz, in a solution under existing atmospheric pressure and temperature.
Effluent Water discharge from a rearing facility, treatment plant, or industry.
Fertilization The addition of nutrients to a pond to stimulate natural food production.
Heat Capacity Characteristic of water making it resistant to temperature changes.
Heavy Metals Metals such as cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), lead (Pb), lithium (Li), manganese (Mn), mercury (Hq), nickel (Ni), zinc (Zn), or iron (Fe).
Hydroponics The growing of land (field) crops with their roots dangling in nutrified water.
Ions Elemental forms or groups that carry an electrical charge in a solution. Their are two types: cations (positive); and anions (negative).
Liming Corrects a stable and low pH usually from the nature of the bottom and watershed soils.
Salinity The measure of the total concentration of all dissolved ions in water.
Salts Substances that dissolve readily in water to form simple ions.
Turbidity The presence of suspended matter or planktonic organisms that reduce the light penetration of water.
Water Hardness The measure of the concentration of calcium and magnesium expressed in milligrams per liter of equivalent calcium carbonate.
Solubility The degree to which a substance can be dissolved in a liquid, usually expressed as milligrams per liter percent
Thermal Stress Stress caused by rapid temperature change or stress caused by extreme high or low temperature.
Saturation In solutions, the amount of a substance in a liquid without it being precipitated or released into the air.
Settling Pond Area where the solids settle to the bottom and the top water is released into the environment or stream. And is eventually cleaned out.
Anaerobic Decomposition of organic matter by bacteria in mud.
Anions Negative ions which are substances such as carbonate, bicarbonate, sulfate, and chloride.
Titrant The reagent of standard solution used titration.
Titremetic Analyses using a solution of known strength the Titrant which is added to a known or specific volume of sample in the presence of a indicator. The indicator produces a color change indicating that the titration is complete.
Organic Related to or derived from living organisms and it contains carbon.
pH The most common water test, that measures hydrogen ions in the water. It has a scale of 0-14 that measures the acidity.