ECO Farm ECO NET 680W Samsung 301B Chips LED Grow Light VS Spectrum King Phoenix 680W LED Grow Light

 Lights for flowering stage, popularly known as grow light, are artificial sources of light that serve the plants the correct spectrum of light to boost their photosynthesis process for year-round growth.

They convert the electrical energy into light particles, photons that help photosynthesis and promote growth.

There are several varieties of grow lights that are available in the market, which makes it difficult for the users to choose from.

If you are looking to invest in grow lights for the flowering stage, we have a detailed Buyer’s Guide to help you choose the right one.

We have listed the best LED grow lights for the flowering stage available in the market. Let’s discover them.

Advantages of LED Grow Lights

LED lights save electricity

The most prevalent reason why growers switch (literally) to LED lights is to save electricity, i.e. the money they invest in their grow-ops. All the equipment in any grow room should be as energy efficient as possible. This means it should do as much work as possible for as little electricity as possible. And this is the area where novel LED grow lights excel.

Our tip: When growing under very intense light (PPFD above 1000 µmol/s), it is advisable to enrich the air in the grow room with CO2 in order for plants to be able to efficiently use all available light energy.

Lower temperature and longer shelf life

LED grow lights produce significantly less heat than traditional high-pressure or fluorescent lamps. When using them, there is less risk of fires or burned or overheated plants. And what is more, you would also save money on the ventilation system in the grow room, because you won’t have to ventilate the growing area as often as with traditional lamps. There is another advantage we should mention: slighter temperature difference in the grow room between night and day. This is usually good news for your plants.

The lower temperature of LED lights also means they usually last several times longer. The top-notch high-pressure lamps can last for just about 10,000 operational hours and they gradually lose efficiency. Novel LED lamps have a life expectancy of approximately 50,000 hours, while the loss in efficiency is negligible and they are considered so reliable that even some manufacturers provide up to a five-year warranty.

Ideal colour spectrum and light intensity

One of the biggest advantages of LED grow lights is the broad light spectrum they offer. If you choose them, you do not need to worry about switching the source of light every time you switch from the growth stage to flowering stage and vice versa, which is exactly the case of high-pressure discharge lamps.

With the help of diodes, the manufacturers of LED lights are able to produce any light spectrum. Most of the time, they choose a broad-spectrum “white” light that ideally imitates sunshine. Under such light, plants develop more naturally and are not stressed when the colour of the light quickly changes.

ECO Farm ECO NET 680W Samsung 301B Chips LED Grow Light

Features:

This ECO Farm LED grow light used foldable design, can be easily to adjust the angle between the lamp and the plant, and according to your plant stage to adjust the illumination area. which is more effectively to promote plants growth. It is designed for home growers, fans get noisy when long time use, but this LED light board use aluminum make it cooling down instead use fans, bring you a FANLESS QUIET grow experience. Simple structure, no fan,no noise. New folding design for a fast installation.High Safety performance driver and Pure Aluminum light bars for better heat disappear and stay cool,never burn your plants like other low quality led grow lights. 

Spectrum King Phoenix 680W LED Grow Light

Features:

The Spectrum King LED grow light is the new LED standard for a 1:1 1000W DE HPS replacement that consumes 36% less power while offering the highest reliability in the industry. SK Cryo-Therm cooling technology enables an ultra-thin profile that maximizes airflow and minimizes microclimates. This grow light is optimized for single or multi-level planting close to the canopy. Many growers are switching from heat-generating HPS lights to ultra-high performance LED strip lights. SonoFarm LED grow lights utilize the latest technologies on the market — from intensive research for optimum performance, to customising the spectrum for the highest possible yield.

Things to Conisder

1. Coverage Area & Light Distance
First of all, you need to know the size of the grow space that your plants will be growing in. Measure your grow space — length, width, and height. Knowing what size grow area you will be growing in is arguably the most important piece of information to know when shopping for LED grow lights . A LED grows light manufacturer will design their grow light for a specific coverage area. The most common coverage areas are 2’x2’, 2’x4’, 3’x3’, 4’x4’, and 5’x5’. As you can see, the length and width are mentioned, but not the height. Hang tight. We will talk about the height of your grow space in a minute. Once you measure your grow space and know what area you need your LED grow light to cover, you can narrow down your search results by filtering to show LED grow lights specific to your grow space.
Now, what about the height of your grow space? That comes into play when we talk about light distance. Every grows light listing should state the coverage area as well as the recommended light distance. The light distance is the distance between the grow light and the top of your plants. Light distance is another thing you need to consider when buying a LED grow light. I’ve had several growers contact me asking for advice on plants that grew too close to their grow light — because they did not factor in the light distance when buying their LED grow light. Let’s go over a quick example. Say your grow space is 4’x4’x6’ (L x W x H) and the recommended light distance on your LED grow light is 24”. So, 6’ (height of grow space) minus 2’ (light distance) equals 4’ tall plants? Right? Wrong! You should also consider the grow pot (which often takes up about 12” depending on the grow pot size) and the “lost distance” above the grow lights which is taken up by the grow light hanging kit.

2. Wattage
This is the most common measure of grow light intensity and is a measure of electricity (watt = amp x volt). This measure can be misleading, though. Some manufacturers (the better ones) give the actual wattage the unit uses — the wall plug wattage. Others, typically lesser brands, will give you the max wattage rating of the LED diodes. To use a simple example, a grow light could call itself 90 watts if it has thirty 3 watt LED’s, however, it is common practice to run LED’s at half wattage to reduce heat production (and therefore heatsink cost) and increase efficiency. So, what was called a 90w grow light could really be 45w (or less!).
Bottom line, you want an actual power draw, not an LED wattage rating. It can be good to be suspicious of overly round numbers — you are likely getting the diode rating and not the actual power draw. Knowing the wattage of the diodes isn’t useless, though. You will get a heck of a lot more light out of a 3-watt diode run at 1 watt than a 1-watt diode run at 1 watt.

3. PPF
PPF (Photosynthetic Photon Flux) measures the total amount of light produced by a grow light in terms of micromoles of photons produced per second (often written as umol/s or μmol/s). This is an important number because unlike PPFD (which will be explained below) it can’t be manipulated and tells you the full amount of light coming from the LED grow lights .

4.PPFD
PPFD (Photosynthetic Photon Flux Density) measures the number of micromoles of photons striking a square meter per second (often written as umol/m2/s, μmol/m2/s, or μmolm-2s-1). 

Full daylight sun at noon in the summer is around 2000 μmol/m2/s. What your plants actually need, however, is likely to be much less than that. In fact, because the Sun’s intensity is only that bright for a small portion of the day and because the angle of that intensity changes throughout the day, providing that much light for an extended period of time would very likely be damaging to your plant. A ‘light response curve’ shows how effectively a plant utilizes light at differing intensities. Depending on the plant, at levels greater than 800–1000 μmol/m2/s the efficiency that a plant uses the light starts to slow. Meaning, you can provide your plant more light than this, but you might not see a huge change in outcome.

It’s worth noting that some LED companies can increase their PPFD numbers by measuring extremely close to the grow light or using spot-light like reflectors or lenses. An LED company should always report what distance their PPFD numbers were taken at (e.g., 24 in, etc.).

5. PAR
This is not a measurement at all, but instead, a type of light that can be absorbed by plants (and coincidentally seen by humans). It ranges from 400 to 700nm.

6. Lumens
This is a measure of the total apparent brightness of a light source and not how many photons are produced. As the cliche goes, “lumens are for humans.” You can think of it as the brightness of a single candle (although the real definition is more complex). By in large, lumens are not a useful measure of light intensity for plants since they overweight colors like green and underweight reds and blues. For instance, 1W of radiant flux at 550nm (green, which the human eye is very sensitive to) is 675 lumens. One watt of radiant flux at 660nm (deep red) is only 45 lumens. The red light will be more easily absorbed by your plant in photosynthesis than the green one, but your eye will see the green light as 15 times brighter than the red light!

7. Lux/Footcandle
This measures how much brightness is striking a unit of area. Contrast this with lumen which is the total amount of brightness coming from the light source in all directions. Lux = one lumen per meter squared. Footcandle = one lumen per foot squared.

Seedlings, clones, mother plants: 200–400 PPFD 
Early to late Veg: 400–600 PPFD 
Flowering: 600–900 PPFD 
Some of you may be wondering about the LED grow lights that produce over 900 PPFD. Will a PPFD higher than 900 produce bigger buds on your plant? The answer to that is yes — only if you run a high CO2 in your grow environment. CO2 is measured by PPM and the CO2 level outside is 400–500 PPM. Plants grow just fine with that amount of CO2. Some advanced growers will add CO2 into their grow room to get the CO2 PPM in the range of 1,000–1,500. Running a higher CO2 PPM like that will allow your plant to absorb more PAR. On the flip side, if you are not supplementing with CO2 and provide your plant with too much PAR, then your plant could encounter problems.

Conclusion

Among the best grow lights, we hope you find your ideal choice. If you are still confused, you can refer to the factors you need to consider before buying the ideal grow light.