400~520nm (blue) – This wavelength can directly develop plant roots and stems, and has the largest absorption ratio of chlorophyll and carotenoids and the greatest impact on photosynthesis. Hps Grow Light 600W, Grow Light With Dimmer , Led Corn Light Grow Light , Top Led Grow Light Review ,Marijuanna Grow Light . Observe which plants are completely in the sun? Which ones are in the shade? When do the plants next to the wall get the sun? From this, you can further find out the growth of the same plant in different places, so that you will have a better understanding of the growing conditions required by the plant. The product will supply to all over the world, such as Europe, America, Australia,Islamabad, Philippines,Montpellier, Johannesburg.Not long ago, Taga City, Miyagi Prefecture, Japan, publicly demonstrated the world's largest LED (light-emitting diode) artificial phototype plant factory to the media. The plant, called Miraihata covers an area of about 2,300 square meters and uses 17,500 LED lights, which can be produced throughout the year and is expected to harvest about 10,000 lettuce trees per day. Not long ago, Fujitsu also announced that after about a year of preparation, low-potassium lettuce produced in its own plant factory began to be put on the market.