Quote Originally Posted by mackSwell
Perp -

I have had success in the past with incandescents during the flowering phase. At that point, the plants need red & far red light, and CFLs do provide some, but not as much. Hell, even good ol' Mr. Sunshine doesn't provide as much red as incandescents do!
Are you saying here that incandescents are better than the sun for flowering?

Quote Originally Posted by mackSwell
But perhaps I'll experiment with this batch since each plant has its own lamp. I could leave one on CFL throughout, and show y'all pix of the difference, if any. Test out that "anyone in their right mind" theory of yours. *smirk*
Please, do the experiment. Of all the years I've grown and hung around message boards like this one you the first and only person who has championed the use of incandescents. So what if they have "lots of that red", if you want red get a 150W HPS. Its like running 2.5 60W incandescents and you'll get 10 times more bud. Your first crop will pay for the light 5 times over at least. I'm sorry, dude, but IMO you're shooting yourself in the foot.

But, don't take my word for it. From the Marijuana Growers' Handbook (emphasis mine):

Cultivators rarely use incandescent or quartz halogen lights. They convert only about 10% of the energy they use to light and are considered inefficient.
Growers have used flurorescent tubes to provide light for many years. They are inexpensive, are easy to set up, and are very effective. Plants grow and bud well under them. They are two to three times as efficient as incandescents.
Here's another one from http://weedfarmer.com/cannabis/lights.php

The common incandescent light bulb emits some of the frequencies of light the cannabis plant can use, but it also emits a high percentage of far red and infra-red light which cause the cannabis plant to concentrate its growth on the stem. This results in the cannabis plant stretching toward the light bulb until it becomes so tall and spindly that it just weakly topples over.

There are several brands of bulb type. One is the incandescent cannabis plant spot light which emits higher amounts of red and blue light than the common light bulb. It is an improvement, but has it drawbacks. it is hot, for example, and cannot be placed close to the cannabis plants.

Consequently, the cannabis plant has to stretch upwards again and is in danger of becoming elongated and falling over. The red bands of light seem to encourage stem growth which is not desirable in growing marijuana. The idea is to encourage foliage growth for obvious reasons.
So I think it's pretty obvious that incandescents are inferior to flourescents in intensity and efficiency so why would anyone use them? If you want to, go ahead but I know there are better alternatives.
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