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#31
03-11-2013, 07:20 PM
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Lighting Types
Also see Light Cycles for more information on plant life cycles. So its time to pick a light. Before you begin to scour the internet lets help you decide which light is right for you! There are quite a few types of lights available today we will talk about incandescent first. The first lighting cycle was extremely wasteful in power consumption and put out almost no lumens. incandescent lamp or incandescent light globe is an electric light which produces light with a filament wire heated to a high temperature by an electric current passing through it, until it glows (see Incandescence). The hot filament is protected from oxidation with a glass bulb that is filled with inert gas (or evacuated). More information about incandescent bulbs can be found here: http://en.wikipedia.org/wiki/Incandescent_bulb These type of lights are rarely sold anymore and you almost never hear about them being used for growing. The next type of light we will talk about is flourescent. Probably the most versatile type of light on the market most ballasts can swap out almost a dozen different spectrums of light bulbs. These come in all different sizes, some bulbs are short and usually go up to 48" Long and can have up to 12 bulbs per ballast! A fluorescent lamp or fluorescent tube is a gas-discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short-wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light. A fluorescent lamp converts electrical power into useful light much more efficiently than incandescent lamps. The luminous efficacy of a compact fluorescent light bulb is about 60 lumens per watt, four times the efficacy of a typical incandescent bulb. For conventional tube fluorescent lamps the fixture is more costly because it requires a ballast to regulate the current through the lamp, but the lower energy cost typically offsets the higher initial cost. More information about florescent bulbs can be found here: http://en.wikipedia.org/wiki/Flourescent_bulb An inexpensive solution that does not use much power and does not generate that much heat these are the preferred lights of almost all agricultural growers for indoors. These bulbs do not have a specifc spectrum because you can buy a specific bulb of any spectrum and make your ballast have the assortment you would like. Agromax is an excellent bulb choice and here is an example of their gallery [You must be logged in to view images. Log in or Register.] Hosted at www.bocahydro.com As you can see the picture is straight forward with spectrums. Any combination can be chosen depending on which cycle your plants are in. Plants like greens and wheat grass never leave the grow spectrum ( 5400K / 6400k ) This is the common vegetative cycle for first stage of plant life. Flowers and fruiting plants will enter bloom spectrums when triggered ( 3000k ) This light mimicks the summer and has a red glow that helps develop fruit, flowers and buds in plants. The finisher or purple spectrums are designed to polish fruits and provide the supplemental light that is entirely missing from High pressure sodium and metal halide systems. HPS or High pressure sodium. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light. There are two varieties of such lamps: low pressure and high pressure. Low-pressure sodium lamps are the most efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. High-pressure sodium lamps have a broader spectrum of light but poorer color rendering than other types. More information about high pressure sodium lamps can be found here: http://en.wikipedia.org/wiki/High_pressure_sodium_lamp These lights pump out alot of raw lumens but use a good amount of power and generate considerable heat. These lights require ventilation unless used in greenhouses or cold environments. They mimic 300k Red spectrum light ( Summer ) And are typically used as flowering lights for plants entering fruiting cycles. These lights are also capable of using a metal halide conversion bulb. Basically a metal halide bulb thats backwards compatibile with this fixture. [You must be logged in to view images. Log in or Register.] Hosted at www.bocahydro.com These lights also require a Ballast ( they do not just plug into the wall ) Metal Halide Lighting A metal-halide lamp is an electric light that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides[1][2] (compounds of metals with bromine or iodine). It is a type of high-intensity discharge (HID) gas discharge lamp.[1] Developed in the 1960s, they are similar to mercury vapor lamps,[1] but contain additional metal halide compounds in the arc tube, which improve the efficiency and color rendition of the light More information on this type of light can be found here: http://en.wikipedia.org/wiki/Metal_halide_lamp [You must be logged in to view images. Log in or Register.] Hosted at www.bocahydro.com Metal halide light bulbs also use a ballast and a reflector like high pressure sodium. These lights are commonly used in the vegetative state of plants. With a strong blue spectrum and very high output they are the industry standard greenhouse light. LED Lights By far the most innovative light type. These lights use a very very small amount of power, have an almost unreal bulb life and generate almost no heat. The drawback is cost. Fixtures powerful enough to grow plants are expensive and not an option for most hobbyists. A light-emitting diode (LED) is a semiconductor light source.[4] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Appearing as practical electronic components in 1962,[5] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness. More information about LED Lights can be found here. http://en.wikipedia.org/wiki/Light-emitting_diode Most of the smaller panels that are for sale for less then 30 dollars are incapable of growing a plant and do not put out enough lumens. LED Lights usually have an adjustable knob that lets you change the spectrum of light they are omitting depending on the stage of your plants life. | ||
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Last edited by Tomatoking; 03-11-2013 at 07:22 PM..
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#32
03-11-2013, 11:17 PM
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i have done side by sides 5 years ago with metal halide flowering, and hps flowering, MH grow cycle works out great the nodes/budsights are far more and closer together, but when usig MH for flower the plants dont yielf or grow as big of buds. i do 14k watts flower and 7k watts MH grow for this reason.
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#33
03-11-2013, 11:38 PM
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well yes sodium is red , red is for flowering, but you are only getting red so you have to supplement halide, you know this obviousley because growing is a big deal for you /wink
but alot of people just grow with a sodium bulb , gotta have one blue spec light on always even if flowering , and honestly if you throw a t5 in a room with white then use purple last week of flowering to kill your leaves you will have he - man nuggets Everything is an art and practice makes perfect just like anything else tomorrow ill be posting the pic of what i did outdoors today Not enough plant pics on here guys start growing shit and post your pics ! | ||
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#34
03-12-2013, 07:05 PM
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This is my current setup, barring a couple of pots:
[You must be logged in to view images. Log in or Register.] [You must be logged in to view images. Log in or Register.] [You must be logged in to view images. Log in or Register.] It looks better during the summer a bit You even got a shot of my trusty ole 2 wheeler | ||
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#35
03-12-2013, 07:08 PM
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I call him rusty
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#36
03-12-2013, 09:00 PM
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A For effort at least you are trying , sure hope those puppies are dormant !
I bought a patriot blueberry bush in november and it still hasnt come out of dormant yet , hope its not dead | ||
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#38
03-13-2013, 12:46 PM
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tina , i love you but , ,
buy a plant , and post a pic ! | ||
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#40
03-13-2013, 12:53 PM
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This message is hidden because Nirgon is on your ignore list.
Get out of my thread crybaby | ||
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