This post is about the LED grow light – growing with a LED light system.
What is an LED grow light?
What are the advantages and what are the disadvantages of an LED plant light?
Today we would like to answer these questions and tell you whether the purchase of an LED grow lamp is worthwhile for you.
The Sanlight LED Bars (2nd generation) offer an optimal light spectrum and precise light control.
A great advantage is the passive cooling, which means that the lights can be operated silently.
There is also a 3-year manufacturer’s guarantee.
With the Sanlight complete set you save an average of 5% compared to buying the individual parts.
It includes: 2x SANlight Gen2 LED bars, power cable
2x extension cables, 1x multiple plug for Q series
2x GrowPRO cable ratchets & 1x Legrand Omnirex timer
Inside the scope of delivery are dimmers (!), Suspension and ropes. It can also be connected in series.
Full spectrum helps in the growth phase, infrared for the flowering phase.
Pre-calculated LED grow light system table
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How do LED grow lights work?
Let’s first take a look at what the name LED actually stands for. When it comes to the LED, one speaks of light emitting diode . We remember school lessons: to put it simply, a diode only lets electricity through in one direction.
So if current flows through the diode, it emits light. There is also a little bit of lost heat. But not nearly as much as with other light sources. That is why LED plant lights do an excellent job of converting the electricity used into light . If you are interested in the function on a chemical level, you should definitely read the Wikipedia article on light emitting diodes.
Advantages of the LED grow light
The advantages of LEDs in plant cultivation are obvious. On the one hand, as explained above, they are very effective in generating light from electricity. That makes them economical. If other light sources have a lower level of efficiency, they need more electricity to generate the same light intensity. That is why it may well be that an LED plant lamp only consumes 300W to produce the same light intensity as a 500W or 600W HPS.
The next point is also related to it. Since less power is converted into heat and thus lost, an LED heats the grow box less. In winter you may even want that, but you should rather ensure a stable climate instead of relying on heating your box with the lamp. Especially since this is switched off in the rest phase anyway.
In addition, the LED lamps are said to be able to best reproduce the color spectrum of the sun. This is achieved by combining many small LEDs which produce light in different wavelengths. Several LEDs are then combined into a module that displays the entire light spectrum.
Last but not least, it should be mentioned that LEDs have an incredibly long lifespan and hardly lose their luminosity in most color spectra over time. LEDs are therefore particularly suitable for those who plan for the long term. In this way, the higher purchase price is amortized over the term.
What are the disadvantages of an LED grow light?
Well, LEDs are still relatively new in the homegrow area and therefore they do not yet have the same level of confidence as, for example, HPS and MHLs. There are growers who swear by LEDs and others who don’t believe in them. Just as we have listed the advantages above, we must also name the disadvantages.
The most important point, apart from trust, is the fact that LED grow lights are still very expensive to buy. While you only have to put € 20 on the table for a 400W sodium vapor lamp, an equally powerful, high-quality LED grow lamp costs around € 200 that is ten times as much.
Choosing the right LED is also much more difficult. Since LEDs cover a wide range of light and there are significant differences in performance and quality, beginners in particular find it difficult to find a good compromise between price and performance.
What do I have to look out for with an LED grow lamp?
The first thing to know is that most LED grow lights are advertised as having a higher wattage than they actually are. This has already led to confusion and annoyance for one or the other. In the case of LEDs, the equivalent light output is usually advertised.
Specifically, this means that a 600W LED grow lamp actually e.g. only uses 300W electricity. But it is just as bright as a conventional lamp (e.g. a HPS) with 600W. This is pleasing for the grower insofar as he receives the same light output with lower power consumption when using LED plant lights.
Next you should pay attention to which light spectrum the LED can display. If the whole spectrum of the sun is shown, it is an all-rounder. If only a narrow area is shown, it is a specific growth or flowering lamp.
But be careful, you should clearly differentiate between conventional LED consumer lamps and LED grow lights. The former usually covered completely different areas of the light spectrum than our plants need. We are particularly interested in blue to white light for the growth of plants and red light for the formation of generous buds.