Zinc: Aids in carbohydrate transformation and also regulates the consumption of sugar in the plant. Along with manganese and magnesium, zinc promotes all the same enzymatic functions. Zinc also aids in chlorophyll production.

Zinc Sulfate: a source of zinc which aids in carbohydrate transformation and also regulates the consumption of sugar in the plant. Along with manganese and magnesium, zinc promotes all the same enzymatic functions. Zinc also aids in chlorophyll production. Also a source of sulfur that helps to produce proteins as well as stimulating the activity and

Zinc Nitrate: source of zinc and nitrogen; also serves as a setting agent to dye something, helping to form an insoluble compound with the dye. Nitrogen is needed for proteins, enzymes and all metabolic processes involved in the synthesis and transfer of plant energy. Nitrogen is part of all living cells and is part of chlorophyll which is the green pigment in plants that makes photosynthesis occur. Nitrogen aids in rapid growth, seed and fruit production, and promotes lush leaves. Zinc aids in carbohydrate transformation and also regulates the consumption of sugar in the plant. Along with manganese and magnesium, zinc promotes all the same enzymatic functions. Zinc also aids in chlorophyll production.

Wick: Part of a passive hydroponic system using a wick suspended in the nutrient solution. The nutrients pass up the wick and are absorbed by the medium and roots.

Watt (W): A unit used to measure electric power. One watt equals one joule/second.

Vitamins: Sweet contains thiamine, riboflavin, pyridoxine, niacin, and B-complex vitamins derived from fermented yeast extracts. They are cofactors that bond to enzymes producing a catalyst effect on carbohydrate metabolism and biosynthesis of proteins and nucleic acids.

Vermiculite: Mica which has been processed and expanded by heat. Vermiculite has excellent water-retention qualities and is a good soil amendment and medium for rooting cuttings.

Underwriters Laboratories (UL): A private organization which tests and lists electrical (and other) equipment for electrical and fire safety according to recognized UL and other standards. A UL listing is not an indication of overall performance. Hydrofarm offers the only complete line of growlight systems that is UL-listed.

Ultraviolet (UV) Light: Light with very short wavelengths, out of the visible spectrum.

Transformer: The component in the ballast that transforms electric current from one voltage to another.