Spider Farmer SE7000 PAR & ePAR Tests and Review

Spider Farmer Discount Code

Discount Code: CCFC

8% Discount Code! CCFC

Spider-Farmer.com

Spider Farmer SE7000 Test Results

Usable ePPF

  • 1809.8

Usable ePPE

  • 0.00
    Efficiency Rating

Power
Draw

  • 734

Cost
Efficiency

  • $0.00
    Cost Rating

Harvest
Potential

  • 0.0 - 0.0
  • 0.0 - 0.0

Power
Draw

  • 734

Harvest
Potential

  • 0.0 - 0.0
  • 0.0 - 0.0

Coverage

  • 0.0
  • 0.0

Ideal Hanging Height

  • 21.5
  • 54

Manufacturer's Data

  • Power Draw: 730
  • PPF: 2044µmol
  • Efficiency: 2.8

Ideal Hanging Height

  • 21.5
  • 54

ePAR Map :

ePAR Test Data

Test Date: August 23, 2023
Tested By: Dr MJ Coco
Sensor: Apogee SQ-610
Spectral Range: 400-750nm
Ambient Temp: 25.5C 78F
Power Draw: 734 watts
Test Area: 150 x 150cm (60 x 60in)
Hanging Height: 54cm (21.5in)
Max PPFD: 1044µmol/m2
Average PPFD: 804.3µmol/m2
Low PPFD: 562µmol/m2
Light Distribution Score: A

ePAR Test Data

Test Date: August 23, 2023
Tested By: Dr MJ Coco
Sensor: Apogee SQ-610
Spectral Range: 400-750nm
Ambient Temp: 25.5C 78F
Power Draw: 734 watts
Test Area: 150 x 150cm (60 x 60in)
Hanging Height: 54cm (21.5in)
Max PPFD: 1044µmol/m2
Average PPFD: 804.3µmol/m2
Low PPFD: 562µmol/m2
Light Distribution Score: A

ePAR Map :

Your Grow Space

Optimal Light For Your Grow

  • Optimal Usable PPF: 0 µmol
  • Number of SE7000 Fixtures: 0.0
  • Total Cost for 0 Fixtures: $0.00
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Spider Farmer SE7000 Review

The Spider Farmer SE7000 is a large LED Bar fixture with 730-watts of power. Spider Farmer is one of the larger brands on the market. The SE series are Spider Farmer’s flagship models. They feature top-end components and excellent performance.

The SE7000 has 8 LED Bars. It arrives disassembled but is easy to put together. The LED bars attach to the end rails with plastic clips. On one side, you connect a cable to each LED bar. The Spider Farmer branded driver can be mounted on top of the fixture or placed outside of the grow space.

The end rails on the SE7000 have a matte black finish. Together with the orange plastic clips it creates a distinctive look. I think the black color was chosen for aesthetics, and it may slightly affect performance. Black absorbs light and transforms the energy into heat. Indoor growers try to avoid it and use reflective finishes inside the grow space. Interestingly, black surfaces also emit heat better than reflective surfaces, so on a heat sink, there is a benefit to a matte black finish. However, the rails on the SE7000 are not part of the heat sink. The rail color is a small issue. It will have minimal impact on performance. However, I believe that form (and color) should follow function in grow light design and engineering.

The Spider Farmer SE series features the Samsung LM301B diodes. They use 3000k and 5000k full spectrum diodes along with 660nm deep red diodes. There are 336 diodes on each LED bar for a total of 2,688 diodes. The power draw is about 730-watts, so there are about 3.7 diodes per watt or 0.27 watts per diode.

The Spider Farmer SE7000 occupies a popular niche in the grow light market. There are a number of LED bar fixtures that are physically just under 120 x 120cm (48” x 48”) and draw between 650 and 850 watts. Compare the Spider Farmer SE7000 to other lights I have tested recently: Medic Grow Smart 8 Plus, Mars Hydro FC-6500, Mars Hydro FC-E8000, Spider Farmer G8600. They can all be run in 5’ x 5’ grow spaces at full power and stay within our recommended limit of 1000 µmol/m2. In a smaller 4’ x 4’ space at full power, the PPFD will exceed that limit, but may be safe for growers running elevated levels of carbon dioxide.

I now test all of these lights in 5×5 spaces for the official numbers. For the official tests, I set the hanging height so that the maximum PPFD is 1000 µmol/m2 at full power. I also run tests with them in 4×4 spaces. For growers with elevated carbon dioxide, I run a 4×4 test at full power with the maximum PPFD up to 1500 µmol/m2. For growers without elevated carbon dioxide, I raise the fixture for better coverage and dim the fixture so that the maximum is a safe 1000 µmol/m2.

In the 5’ x 5’ area, the Spider Farmer SE7000 delivers a maximum PPFD of 1000 µmol/m2 at a height of 54cm (21.5”). The light has a normal distribution with the relative hotspot right in the center and the lowest values in the corners. However, all of the corners are still well above the 500 µmol/m2 threshold for efficient photosynthesis.

The ePAR test is a better predictor of photosynthetic potential. ePAR (400-750nm) includes traditional PAR (400-700nm) and far-red light (700-750nm). Recent research shows that far-red light is photosynthetic, so it should count. However previous studies that examine the amount of light that plants can process measured only PAR. That is why I still use the maximum PAR measurement to set the hanging height.

The official ePAR test results in the 5’ x 5’ area are solid and stack up against other competitive fixtures on the market. The Average ePPFD over 800 µmol/m2 is excellent. The Photon Efficacy is 2.47 µmol/w which is better than most competitive fixtures. And the distribution is good even with a relatively low hanging height.

In the 4’ x 4’ area, I ran several tests. I started by setting the fixture at 30.5cm or 12” above the sensor. 12” is usually the lowest comfortable level to hanging a light to be able to easily work on the plants and accommodate growth.

The performance at 12” in a 4’ x 4’ space is great. The distribution is excellent with a maximum PPFD of 1319 µmol/m2 with corner PPFD values around 1100 µmol/m2. In the ePAR test the density values are even higher and the SE7000 pulled an impressive 2.53 µmol/w.

Spider Farmer recommends an even lower hanging height of only 8”. So, I lowered the SE7000 and ran an ePAR test. The maximum density of light at this height is still within the limits for plants with elevated carbon dioxide. Normally a lower height with lead to inferior distribution. However, since the SE7000 is basically the same size as the 4’ x 4’ coverage area, the hanging height has only a small impact on the quality of distribution. Indeed, at 8” the density of light went up in every square in the test grid. The improvement is marginal but fairly uniform. It is a result of less photon loss due to reflection at the lower height.

If you run elevated carbon dioxide in a 4’ x 4’ grow space, I would run the SE7000 at 8” during mid and late flower. However, please keep in mind that in order to successfully elevate the carbon dioxide to the recommended level (1200-1500 PPM), you will usually need to turn off your exhaust fan and seal the space. That requires air-conditioning in the grow space to compensate for the heat and reheat or dehumidification to remove the humidity. If you run an exhaust fan to handle heat and humidity, then it is not really possible to elevate the levels of carbon dioxide safely in your grow space.

For growers without elevated carbon dioxide, the SE7000 can produce a phenomenal distribution of light in a 4’ x 4’ space. I raised it to 45.5cm (18”) and lowered the dimmer knob to about 80% (584w). In the ePAR range, the maximum density in this set-up is 1056 µmol/m2, and it would be just about 1000 µmol/m2 in the PAR range. The uniformity is outstanding. The average ePAR density is 994.8 µmol/m2 and the lowest density is 899 µmol/m2. This is about as much light as you can possibly fit within our recommended limits.

I tested the dimmer in the 5’ x 5’ area at the official test height, 54cm (21.5”). The built in dimmer is continuously variable with markings at 20, 40, 60, and 80%. At the top of the range, the dimmer was spot on, but at 40 and 60% on the dial, the SE7000 dimmed more than expected. This may not be very consistent across different units. However, what is consistent is the relationship between the power draw and the light output. If you want to accurately dim any fixture, I recommend measuring the power draw.

I measured the surface temperatures after the 8” test in the 4’ x 4’ area. The SE-7000 had been running at full power for several hours in the climate-controlled room. The air temperature was a steady 25.5C (78F). The LED bars hit a high temperature of 45.3C (113.5F). The driver hit a high temperature of 60.4C (140.7F). Many growers think that since the driver runs warm to the touch that much of the heat comes from the driver. However, surface temperatures do not correspond to the heat added to the space. At full power, the SE7000 will add about 2,500BTU/hr. Only about 7% of that (175BTU/hr) comes from the driver.

The Spider Farmer SE7000 has a list price of about $760, but it is frequently offered at a lower price on spider-farmer.com. You get an additional 5% off when you use discount code CCFC. The code will stack on their sale prices and get you the best deal available with free shipping.

With the discounts, the Spider Farmer SE7000 price comes to about $0.38/µmol. This is in line with other competitive fixtures that use the Samsung LM301 diodes (Mars Hydro FC-6500, Medic Grow Smart-8 Plus). Fixtures with more economical, but still high performing, diodes are now priced about $0.29 – $0.33/µmol (Mars-Hydro FC-E6500, Medic Grow Smart-8, Medic Grow Fold-8).

The Spider Farmer SE7000 performed very well in both the 5’ x 5’ and the 4’ x 4’ areas. The fact that the edge PPFD values went up when I lowered the SE7000 from 12” to 8” is a stunning testament to the quality of distribution. I am not a fan of using a black finish for aesthetic purposes in a grow space. However, the photon efficacy of the SE-7000 is near the top of the market. So, any performance loss is very minor. It is crazy to think that $0.38/µmol is now a premium price point (just a few years ago we thought $1.00/µmol was an incredible deal), but there are high performing lights available for about $0.30/µmol now. That said, the Spider Farmer SE7000 is a great light at a very fair price.

Impartial Testing and Reviews


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