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How To Choose The Right Grow Light For Your Indoor Garden

Updated on July 19, 2012

In regards to indoor hydroponic growing, you can find five main lighting varieties that you can buy: metal halide (MH), high pressure sodium (HPS) , LED, compact fluorescent (CFL) , and fluorescent tubes. Many grow spaces use a mixture of these to attain optimum development.

Metal halide grow light (MH)

Metal halide lighting is typically the most popular light utilized on indoor hydroponics. They crank out heavy from the blue spectrum, that the crops employs to generate leaves. Lots of gardeners make use of a metal halide throughout the plant’s main development phase, then change to a HPS light as soon as the plant is preparing to get started blooming fruit aka buds. MH lighting will create a great deal of heat, therefore you would be wise to have appropriate cooling and venting.

High Pressure Sodium (HPS)

HPS lamps generate lumination principally in the reddish colored light spectrum. High pressure sodium lighting is the sole growing bulb that price effectively create substantial levels of red spectrum lighting. It is quite typical for gardeners to employ a digital ballast, which lets them change amongst MH and HPS on a single reflector. High pressure sodiums generate great temperature, so a suitable venting and cool down setup should be used with any high pressure sodium bulb more than 400w.

LED Grow Light

LED is actually a fairly recent technological innovation to the indoor horticulture community, its principal strengths are quite minimal heat, lower electrical power usage, and total spectrum range of the light. Leds have become really varying assessments since their introduction, some endorse them as well as some lay claim the energy expenses are decreased by up to 80% when compared to standard metal halide systems. LED lighting is very costly in the beginning, but possess a duration of approximately 100,000 productive working hours.


Compact fluorescents are common for hydro systems because of their value, accessibility, and efficiency. Large output, complete range CFL's are available at just about any significant big box store, and cost well below $50. Because of the comparatively reduced lumen production of compact fluorescents, they normally are only utilized in smaller grows, an individual metal halide bulb could generate the equivalent amount of lumination as ten CFL's.

Fluorescent Tube

Fluorescent tubes are classified as the common lighting tubes utilized to light most workplace complexes, they are available in entire spectrum types. Fluorescent tubes are mainly utilized for lighting clones athough many growers can grow some very nice nugs with them. To obtain adequate lighting from the fluorescent tube, every single portion of the plant’s vegetation should be inside of One foot of the tube if possible. Fluorescent tubes generate lower temperature which enable it to cover a sizable area.


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      6 years ago

      interesting, never thought actually that proper artificial lighting is so important and that there ate so many different kinds of it. Thank you for useful information!


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