The light emitting diode is a low heat light source that can emit light is specific nanometers (NM). It is sold as for example 600nm or 830nm instead of kelvins (K) and has a narrow stand in the spectrum for example 600nm has a low of 570nm and the high of 630nm and 800nm and 860nm being the high. It allows you to zero in on the light that is needed for a specific cause. For plants thats 380 NM 520 NM for vegetative and 610 NM 720 NM for flowering. That and the fact that a led can now be made to 216 lumens (LM) / watt (W) in a warm spectrum from what I gather from this link http://www.epistar.com.tw/_english/04_pr/02_detail.php?SID=30 . I say that with enough of these new leds to make 1000w light that it will out perform an hps. It is cooler and has more lumens. That and the fact that you can place each array spaced out in a dome shape around your plants or even right on the sides to make the most of your light allowing the plant to absorb as much as possible.
With high-pressure sodium, metal halide, ceramic metal halide, compact florescent lights, and t5s I read of the different light spectrums in kelvins. The warm light spectrum used for flowering growth and the cool light spectrum for vegetative growth. In this link you can view the chart https://www.rollitup.org/general-marijuana-growing/9582-marijuana-light-spectrum.html you will notice a number on every bulb you buy in the stores. With the led you will notice the NM like on the chart in this page http://www.stealthgrow.com/facts.htm#spectrum and you can see how both compare to the colors of the light spectrum.
The important thing on the second chart is that it shows you the useable light spectrums photosynthesis. That is the color wavelengths of ordinary light that the plants use for the use of making the plants food. There is also a hps compared to the photosynthesis along with the sites own led array. You will notice the hps dose not mimic the plants needs. I think hps is so popular because it is close enough and it produces a high amount of lumens. Lumens are the amount of light emitted from the source. So if you had equal watts and multiple bulbs the one with the higher lumens will shine brighter. The ones that are low kelvins or high nanometers will have a yellowish tinge to the light and vice versa. With hps as the leading flowering bulb in shocked to know that it is not in the correct light spectrum that has been scientifically proven for plants. That brings the idea of the ceramic metal halide is better because it offers light in a more wide light spectrum shown in a chart close to the bottom of the page http://advancedtechlighting.com/cdmed18.htm but if you look you will notice that it is lower in lumens then the hps. Also there is the face that ultraviolet lighting has been proven in multiple studies that it is beneficial to plants (better THC from it) witch the ceramic metal halide has. That being said a led light has none of that and I would recommend supplementing it in.
With high-pressure sodium, metal halide, ceramic metal halide, compact florescent lights, and t5s I read of the different light spectrums in kelvins. The warm light spectrum used for flowering growth and the cool light spectrum for vegetative growth. In this link you can view the chart https://www.rollitup.org/general-marijuana-growing/9582-marijuana-light-spectrum.html you will notice a number on every bulb you buy in the stores. With the led you will notice the NM like on the chart in this page http://www.stealthgrow.com/facts.htm#spectrum and you can see how both compare to the colors of the light spectrum.
The important thing on the second chart is that it shows you the useable light spectrums photosynthesis. That is the color wavelengths of ordinary light that the plants use for the use of making the plants food. There is also a hps compared to the photosynthesis along with the sites own led array. You will notice the hps dose not mimic the plants needs. I think hps is so popular because it is close enough and it produces a high amount of lumens. Lumens are the amount of light emitted from the source. So if you had equal watts and multiple bulbs the one with the higher lumens will shine brighter. The ones that are low kelvins or high nanometers will have a yellowish tinge to the light and vice versa. With hps as the leading flowering bulb in shocked to know that it is not in the correct light spectrum that has been scientifically proven for plants. That brings the idea of the ceramic metal halide is better because it offers light in a more wide light spectrum shown in a chart close to the bottom of the page http://advancedtechlighting.com/cdmed18.htm but if you look you will notice that it is lower in lumens then the hps. Also there is the face that ultraviolet lighting has been proven in multiple studies that it is beneficial to plants (better THC from it) witch the ceramic metal halide has. That being said a led light has none of that and I would recommend supplementing it in.
