Where I was living at the time, I didn't want to have install ducting for ventilation or anything like that, which made HID lights pretty much out of the question for me.
The following information and pictures are here thanks to endive from GrowMedical420.com. Definitely check out his website out for tons more pictures and to get updates about their current and future medical marijuana grows!
Please note: This article was written in April 2012. Since then, LED grow lights have been improved to produce even better results when growing marijuana.
Some people say LEDs work great for growing marijuana, while others claim LED grow lights are junk and can't be used to grow anything.
Pros Will outproduce a 400W HPS using only 240 watts of electricity, very little heat produced, and buds are "Potent enough to catch even experienced patients off guard, to the point that the batches out in the local Med community have been nicknamed 'Warning Label.'"
For people who use cannabis derived products on a regular basis, it is very tempting to try growing the plant at home. The benefits are quite obvious: the cost is drastically lower and there aren’t any hassles related to the actual purchase of medical marijuana.
Many people all around the world grow cannabis at their homes, be it for recreational or medicinal purposes, and while some of them do quite well and manage to produce a good product, for others it doesn’t work so well – their plants wither quickly or produce insignificant yields.
These issues can be related to improper usage of lighting. (The same issues affect other types of plants as well.) Grow lights are a great tool for making the growing process more efficient, but they can also be harmful to the plant if not used correctly.
Using Inferior Products
Light is among the most vital factors to consider when growing plants because it triggers the photosynthesis process. If you’re using regular incandescent lights, you’re not very likely to grow strong and healthy plants. Therefore, for best results it is recommended that you use full spectrum LED grow lights. They are specifically designed for the purpose and have the feature to deliver light in the exact spectrum the plant needs.