ECO Farm 70W Spliceable LED Grow Light Bar Evaluation

January 08, 2020

1. We are now unpacking ECO FARM 70W LED Light Bar 

We took everything out and put it on the table so that it looks nice and carefully.

Here are the different sides of the main light, and I'll show you.

Below the picture was the accessories including anti-glare sunglasses, ratcheting pulleys that can be raised and lowered, metal slings, and power cords.

2. Let’s measure the spectrum of the ECO FARM 70W LED light bar first

  Now I hang up this light, put it straight and flat, and set up a coordinate system for spatial measurement of this light according to my previous practice of doing evaluation. As shown in the figure below: from the bottom of this light, which is the center point of the light bead face, vertically downward, is the z-axis.From the center of the bead face, the center line parallel to the long side of the rectangle is the X-axis, and the center line parallel to the short side of the rectangle is the Y-axis.

  We take two measurements, and we put them on the Z axis, 24 inches above the light, and we measure them.

  Here is the spectrum that we measured with this instrument, and we took it out of the instrument, and you can see that the spectrum is pretty good.

  Here is the spectrogram of the cannabis growing light under the brand Fluence, which is very well known in the cannabis growing light industry.

  As you could see, the spectrum of this light bar is very close to the spectrum of fluence. The full spectrum of professional cannabis cultivation.

 3. Let's test the coverage area of this light when planting cannabis

3.1. Let's start with measure the spatial distribution of the light quantum flux density of this light

  We placed the measuring mesh cloth with the dimensions I had drawn before directly under the light, and then measured the quantum flux density of light at each point on the mesh cloth by setting the distance between the light bead and the mesh cloth as 12 inches, 18 inches respectively.

  The whole process is quite complicated, that is, constantly changing the position and height. I have sorted out the specific measurement values for you and marked them directly on the measuring grid.As shown in the following three pictures.

  Let's take the data from the above two measurements, and from the side view, we can make the following conical light distribution map.

 

  A cannabis grow lights can cover how much area of the simple calculation method is, to turn the light on a certain height to ensure that the center of photosynthetic photon flux density effectively (PPFD) value is 200 mu mol/m ^ 2 / s, and then find the photosynthetic photon flux density (PPFD) effective value is 150 mu mol/m ^ 2 / s boundary distance of center distance, in the radius scope, can meet the demand of marijuana in seedling stage lighting.

  Let's look at the effective exposure data of this light in this way.

3.2. How much light can this light cover with during the seedling cultivation?

  The appropriate illumination intensity of cannabis seedlings was 200±50 mol/m^2/s. We chose a small pot with a square mouth and the size of the pot mouth was 3.93 inches (10 cm).On the other hand, ECO FARM 70W LED splicable light bar can cover an area of 7.08 square feet (0.66 square meters), or 56 plants.

  According to the measurement data, using the ECO Farm 70W indoor planting strip in the seeding area, the height of the cannabis seedling top from the light is about 18 inches (45.72 cm), at this time, the maximum coverage radius is measured to be 17 inches. As shown in the figure below.

  If the ECO Farm 70W LED light bar are used in a large area of plant nursery, a light can cover an area of 2.83 feet times 2.50 feet is equal to 7.08 square feet.Because of the large area, the lights will stack up, and the edges will reach PPFD: 150 mol/m^2 s. As shown in the figure below.

 

 When this lamp is used sperately, we recommend using it at the seedling stage of the plant. Although its spectrum can fully meet the growth of the flowering stage of the plant, from the data we can find that its PPFD is not very large, and the light required for the flowering stage of the plant in terms of quantity, supplemental light is also needed. Of course, you can also buy multiple combinations to use, after all, the price is relatively cheap.

  Actually, it is enough to grow cannabis during seedling stage. For small plantings, sufficient seedlings can be planted. Likewise if you want large-scale cultivation, you can also reassemble this lamp. I suggest that you can contact Mary, product sales director of ECO FARM GREEN INC., And their company's engineers will help you design a variety of cannabis cultivation blends for free. Arrangement of light sources.

4. Let's check the quality of this light

  Let's take a look at the light beads, which are made by the Korean brand Samsung.This kind of light bead is the main application in the plant light industry at present. It has a high photosynthetic quantum number efficiency and is a light bead that saves electricity.

   Finally, let's take a look at the heat dissipation of this strip. The wattage and luminosity of this lamp is not large when we operate it, the operating temperature is low, and it is not easy to damage the lamp beads and small cannabis. The aluminum substrate of the shell is very thick, and the heat capacity is relatively large. The surface area design of the heat-dissipating aluminum profile is also large enough to quickly dissipate the heat of the lamp beads. In addition, the LED lamp beads have low heat, and will not be very hot for a long time of use, protecting the plants from being burned.

  Judge from a few details above, this light, true quality is good.Mary, director of product sales at ECO FARM GREEN INC., told me they offer a three-year warranty on the light, with free warranty and replacement service for three years.I think the quality of this light will not be any problem after three years.

5. Saving electricity bill

  Finally, we will be the light for a period of time, to see the actual power consumption, we use an electric power testing instrument to actually look at this light is really save electricity, first of all, we look at its instantaneous power, the display is 66.7 w with instructions for the 70 w is similar, instantaneous power near the average power fluctuation is a normal phenomenon.

  As can be seen from the picture, we have lit this light  for 211 minutes in total, and the actual electricity consumption is only 0.23 kwh, while that for 24 hours is 1440 min. Thus, the electricity consumption for 24 hours in a day is about 0.23*1440/211=1.61kwh

  At $0.125 a kilowatt-hour, you could cover 7.08 square feet of cannabis growing space for $0.201 a day.1 square foot (sq.ft)=0.092903 square meters (sq.m), which is the area that can cover 0.66 square meters. 

  If your nursery area is 2 meters wide and 5 meters long and 10 square meters (107.6sq.ft), 15 of these lights will suffice. The nursery day is usually only 16 hours. So, really The daily electricity bill should be 2.03USD.

  Personally I think this led light is particularly suitable for seedlings. ECO FARM GREEN INC. Co., Ltd. product sales director Mary told me that their family has a planting plant plan to use this lamp for nursery. Everyone can go to their official website ecofarm.ca to buy, it will be cheaper.

6. The following is my evaluation of the advantages of this planting light after the actual measurement

(1) The spectrum is very good, very close to the spectrum of Fluence's authoritative cannabis planting lamp.
(2) The light area is relatively large. In the 70-watt cannabis planting lamp, it can be considered to illuminate a relatively large area.
(3) The quality is really excellent. The main core parts are brand products produced by large factories. It should not be broken after three years of application.
(4) The price is really cheap. Basically, there is no cheaper 70-watt cannabis planting lamp on the market.

  All above all, we have completed the evaluation of this light. If you are interested in this light or other products, you can contact Mary, product sales director of ECO FARM GREEN INC., LTD. Her contact information is: her email address is business@ecofarm.ca, WhatsApp is +86 13155136939, or directly through the sales link of the following products

https://www.ecofarm.ca/products/eco-farm-35w-70w-80w-140w-splicable-led-grow-light-bar?_pos=1&_sid=98e120372&_ss=r