The use of LED Grow Lights in indoor, hydroponics and greenhouse cultivation combines environmentally friendly aspects, financial savings including better growth, quicker harvest cycles and high yield.
For the last decade, in the indoor gardening industry, high-intensity discharge (HID) lamps are used for artificial light generation. Although HID lamps were originally developed for street lighting, they provided good results in the indoor cultivation. Back in the days they were the only lighting systems with a sufficient amount of photosynthetically active radiation (PAR). In particular, HID lamps emit wavelengths far outside the range of 400-700 nanometers (nm) of photosynthetically active radiation. An average of more than 50% of the emitted light of an HID lamp cannot be absorbed by the plants. The inefficient radiation generates tremendous heat in the infrared range and is useless for plant's photosynthesis. In fact, too much heat stresses the plants and inhibts photosynthesis. The generated heat is also the main driver for high energy costs related to HID: the inefficiency of the lamp is one aspect. The need for energy-consuming climate devices, such as cooltubes or air conditioning is not always considered when using HID's.
Fluorescent bulbs and tubes provide good results for vegetative growth, but are not strong enough for the flowering due to the low intensity.
Nevertheless, the biggest disadvantage of these systems is that the color spectrum of the light is not optimal for best indoor plant growth results. Traditional light sources do not provide the intensity of the PAR wavelengths that are key for effective photosynthesis and of the plant's hormone production.
Plants grow best under light in the blue, green and red wavelenghts of the visible light spectrum. If you would like to better understand why the light spectrum has an enormous impact on your plant's photosynthesis, please keep on reading here.
The spectral measurements listed below show a conventional HID lamp (for flowering) and the Grow Light Spectrum.
HID Grow Light
excite Grow Light
LED Grow Lights are many times more efficient, generate less heat and emit a light with an enormous intensity. The LED technology makes it possible to almost exactly produce only those wavelenghts of light that are absorbed by most of the plants. In addition to the reduction of energy consumption, you will be amazed about the results - no other technology available on the market produces better results. Here are some reasons why you should switch to LED Grow Lights: