Jump to content
  • Recently Browsing   0 members

    No registered users viewing this page.

Recommended Posts

please add your special light mechanics

 

 

Fluorescents

Until the early 1980's most indoor marijuana growers used fluorescent lights to illuminate their garden. These tubes have tremendous advantages over incandescents. They emit about 3 times as much light as an incandescent (given the same wattage), and the light spectrum is one that plants con use more effectively.

 

However, they do certainly have their limitations. Light is emitted over a large area, so it is not concentrated. Because of this, the lights have to be hung very close to the plants, and constantly moved to accommodate plant growth. This makes garden maintenance rather difficult. Marijuana plants can often grow very quickly increasing the times the lamps need raising. To add to this, in the flowering period, fluorescsent lights are not effective making them a poor choice for lighting marijuana plants.

 

Fluorescents are, however, very useful in cloning, and starting seedlings. Because in these stages, a plant is not growing vertically very quickly, the disadvantages of moving the lights are reduced. They also put out a more gentle light than the HID lamps, and release less heat.

 

If you choose to use fluorescents, it is best to purchase the 'cool white' variety or a mix. The ones that are sold as grow lamps (including grow-lux, vitalite, etc.) are much less efficient than a standard fluorescent, and just do not put out enough light to be useful. The slightly different spectrum produced by these lamps does nothing for most plants.

 

 

High Intensity Discharge Lamps (HID's)

You will find pictures of marijuana lights here.

 

High intensity discharge lamps are easier to use, and more efficient. Low wattage HIDs are sometimes sold for household outdoor use. Large Wattage lamps are used for lighting streets, parking lots, stadiums and other large areas. They come in two basic flavors:

 

Metal Halides or MH lamps emit a white light that looks slightly bluish. They are used to light stadiums, convention centers, gymnasiums, and other large areas where a natural looking light is desired.

 

High Pressure Sodium or HPS lamps emit a pink or amber light. They are used for lighting parking lots and other areas where the color of the light is not important. HPS units are much more efficient than MH ones, producing more light and less heat per watt of energy consumed. They are often used alone with no detrimental effect on the plants, and will promote faster plant growth than MH lamps during both vegetative growth and flowering. Combinations of

bulbs are NOT required, as the HPS lamp does produce all of the light spectrums necessary for healthy growth.

 

MH lamps are available in 175,200, 400 and 1000 watt sizes. HPS lamps come in 50, 75, 150, 400 and 1000 watt sizes. Each lamp requires its own ballast, which comes with the fixtures that are designed to use these lamps, and are also available separately.

 

The following chart shows how much light each lamp emits, and the area that it covers adequately:

 

 

Timers for the garden

The lighting system needs to be switched on and off automatically so the marijuana plants receive 18 hours of light per day during vegetative growth and 12 hours per day when flowering. most hard ware stores and other electronic shops sell timers. they are usually very cheap . It may be advisable however to purchase a more robust timer if your serious like a pool timer.

 

 

Lamp # of Lumens Sq. Ft

4'FL (CoolWhite-40W) 2,960 1-2

8'FL (CoolWhite-75W) 5,800 2-4

MH 175W 14,000 5-10

MH 400W 40,000 12-20

HPS 70W 7,600 3-6

HPS 150W 16,000 6-11

HPS 400W 50,000 15-30

 

Marijuana grow rooms should receive 1000-3000 lumens per square foot. Successful gardens usually are lit at around 2,000 lumens per square foot. During the vegetative stage, plants stretch out when they receive low levels of light. During flowering, the flowers are looser and sparse.

 

When choosing which marijuana lights to use in your garden, we suggest a combination of MH and HPS with flouros used in cloning and early seedlings. It is also important to chose the right shade. Some will reflect light much better than others. Any good supplier should be able to recommend the best for your requirements.

 

 

Share this post


Link to post
Share on other sites

Does anyone on here know anything about LED lights and if they are worth the extra money or not. I am trying to grow and have a nil budget and thought maybe if I pay a lot up front it could save me money in the long run. thanks for any and alll advice


"We are all here for a spell; get all the good laughs you can."  "Try to live your life so that you wouldn't be afraid to sell the family parrot to the town gossip."  "People are marvelous in their generosity, if they just know the cause is there."  "Civilization has taught us to eat with a fork, but even now if nobody is around we use our fingers."  "Half our life is spent trying to find something to do with the time we have rushed through life trying to save."  "Even if you're on the right track, you'll get run over if you just sit there."  "Broad-minded is just another way of saying a fellow is too lazy to form an opinion."  "Why don't they pass a constitutional amendment prohibiting anybody from learning anything? If it works as well as prohibition did, in five years Americans would be the smartest race of people on Earth"  "Be thankful we're not getting all the government we're paying for."
Will Rogers

 

Share this post


Link to post
Share on other sites

my opinions are that leds are overrated... lumen output is subpar... your better off going hid bro...yes it cost more for power but it makes up in 0ther areas.


suffering within yourself, and the truth leaves you dying alone. The pain behind the eyes has a destiny, so use the hate to fuel the fire inside,. choices leave you trapped, and every route you choose is a path that leads back to the start. you might accept defeat in a world out to get you, but the finger on the trigger is yours.

Share this post


Link to post
Share on other sites

Yeah I wouldnt recommend leds quite yet I have watched plants be grown under both and noticed it takes longer for plants to finish under led compared to.hps about 6-7 days longer which to me is a pretty big difference they yeild fine but your better off with hps

Share this post


Link to post
Share on other sites

I must take exception to the following,,,

 

If you choose to use fluorescents, it is best to purchase the 'cool white' variety or a mix. The ones that are sold as grow lamps (including grow-lux, vitalite, etc.) are much less efficient than a standard fluorescent, and just do not put out enough light to be useful. The slightly different spectrum produced by these lamps does nothing for most plants.

 

For vegetative state, 'cool white' is not the proper spectrum, "Daylight" with a 6500K rating supplies the blue light spectrum needed for this period of growth, the "Cool" white and warmer 3100K and 2700K are red light spectrum and are more tailored for flowering demands from the plant.

Share this post


Link to post
Share on other sites

I must take exception to the following,,,

 

If you choose to use fluorescents, it is best to purchase the 'cool white' variety or a mix. The ones that are sold as grow lamps (including grow-lux, vitalite, etc.) are much less efficient than a standard fluorescent, and just do not put out enough light to be useful. The slightly different spectrum produced by these lamps does nothing for most plants.

 

For vegetative state, 'cool white' is not the proper spectrum, "Daylight" with a 6500K rating supplies the blue light spectrum needed for this period of growth, the "Cool" white and warmer 3100K and 2700K are red light spectrum and are more tailored for flowering demands from the plant.

i second that


suffering within yourself, and the truth leaves you dying alone. The pain behind the eyes has a destiny, so use the hate to fuel the fire inside,. choices leave you trapped, and every route you choose is a path that leads back to the start. you might accept defeat in a world out to get you, but the finger on the trigger is yours.

Share this post


Link to post
Share on other sites

×