Fluorescent bulbs are the most popular lighting shelves increasingly, also by weak prices. Shelf pot growing is a useful technique.The shelves can be installed one above the other, with fluorescent lighting at each level. As each tray has its own light, you can set some pills have 24 hours of daylight, and others have 12 hours of light. Ideally two areas, one for germination and cloning, and another for flowering plants, mature. I recommend placing shelves 3-4 feet away, so the plants have plenty of room to grow.
There are several advantages to display more, but there are also some disadvantages. On the one hand, increase their duration to adjust the height of your lamp every day. It is difficult to even take a short vacation, and takes a long time. Of course, you really need to adjust every day when plants are in a vegetative state. This is because under the right lighting, the plants can grow an inch a day or more. You want to keep the lights about 2 inches from top of plants, we must constantly adapt. If you must leave for a while, it is preferable to have the lights higher than to have your plants room to grow. The plants grow a little slower if the light is off, but it will not make much difference.
A good alternative strategy is to use fluorescent lamps for cloning, germination and early seedling stages of the upper floor is a room or closet, and HPS (high pressure sodium) lights at the top of strong growth and flowering. Most configurations of HPS lamps do not need to be adjusted, and is a good idea to put the lights so that they do not need to change. Need to shed light on as far as possible, but not too high that it interferes with the plants they grow. If you want to increase the growth of certain plants, you can put on a shelf or table, closest to the lamp.
A shelf, preferably painted white, is all that is required for this type of configuration. Must be 18 to 24 cm wide. You can hang lights store chains or ropes, and establish a kind of leveling system so you can increase or decrease your lights on a regular basis. If plants are far from light, which are long and thin, and not being able to produce as much bud. Often, this type of configuration is called “sea of green, because when the plants mature, you can not really identify a plant from another, and it looks like a sea of green leaves. A sea of green setup good outputs were harvested every few months or more frequently if you spread the seed.