ViparSpectra KS5000 PAR & ePAR Tests and Review

ViparSpectra Discount Code

Discount Code: DrMJCocoKS

Use Discount Code: DrMJCocoKS during checkout on Amazon or ViparSpectra.com

Amazon

ViparSpectra KS5000 Test Results

Usable ePPF

  • 1186.7

Usable ePPE

  • 0.00
    Efficiency Rating

Power
Draw

  • 488

Cost
Efficiency

  • $0.00
    Cost Rating

Harvest
Potential

  • 0.0 - 0.0
  • 0.0 - 0.0

Power
Draw

  • 488

Harvest
Potential

  • 0.0 - 0.0
  • 0.0 - 0.0

Coverage

  • 0.0
  • 0.0

Ideal Hanging Height

  • 11
  • 28

Manufacturer's Data

  • Power Draw: 500
  • PPF: 1200
  • Efficiency: 2.4

Ideal Hanging Height

  • 11
  • 28

ePAR Map :

ePAR Test Data

Test Date: February 20, 2022
Tested By: Dr MJ Coco
Sensor: Apogee SQ-610
Spectral Range: 400-750nm
Ambient Temp: 24C (75F)
Power Draw: 488 watts
Test Area: 120 x 120cm (48 x 48in)
Hanging Height: 28cm (11in)
Max PPFD: 1042µmol/m2
Average PPFD: 824.1µmol/m2
Low PPFD: 564µmol/m2
Light Distribution Score: A

ePAR Test Data

Test Date: February 20, 2022
Tested By: Dr MJ Coco
Sensor: Apogee SQ-610
Spectral Range: 400-750nm
Ambient Temp: 24C (75F)
Power Draw: 488 watts
Test Area: 120 x 120cm (48 x 48in)
Hanging Height: 28cm (11in)
Max PPFD: 1042µmol/m2
Average PPFD: 824.1µmol/m2
Low PPFD: 564µmol/m2
Light Distribution Score: A

ePAR Map :

Your Grow Space

Optimal Light For Your Grow

  • Optimal Usable PPF: 0 µmol
  • Number of KS5000 Fixtures: 0.0
  • Total Cost for 0 Fixtures: $0.00
  • Shop

ViparSpectra KS5000 Review

The new KS5000 is the first LED bar Fixture from ViparSpectra. It is a 500-watt foldable array with six LED bars that is designed for 4’ x 4’ coverage. The KS5000 is a well-engineered light with superior components and performance. ViparSpectra wanted to achieve both uniform coverage and superior efficiency. They studied the market and designed a light that has better diodes, is a little more powerful, and is bigger than competitive fixtures for 4’ x 4’ coverage. I think ViparSpectra made some great decisions and produced an excellent 4’ x 4’ grow light.

The ViparSpectra KS5000 is now available on Amazon and ViparSpectra.com. Our discount code is good in both places. For the ViparSpectra KS series, use discount code: DrMJCocoKS

The ViparSpectra KS5000 features the state-of-the-art Samsung LM301h diodes. They also incorporate the leading Osram 660nm diodes to create an ideal spectrum for vegetative and flowering growth. The diodes are driven by Sosen drivers that come in a ViparSpectra case with a dimming knob and daisy chain ports.

Each of the six bars has 210 diodes. In total, there are 1,260 diodes or 2.52 diodes per watt. There are 1,224 Samsung LM301h diodes. 792 of them have a color temperature of 3000k. The remaining 432 have a color temperature of 5000k. There are also 36 of the Osram 660nm diodes

One of the design objectives for this light was to create a uniform distribution of PPFD across the canopy from corner to corner. This is a design objective for most grow lights on the market, but the ViparSpectra KS5000 accomplishes it better than most. There are several design features that allow it to be successful at achieving a uniform distribution.

The bars on the KS5000 are spaced with a larger gap in the middle. Along each bar the diodes are algorithmically distributed, and more diodes are concentrated out towards the ends. These are strategies that many grow lights now incorporate. The ViparSpectra KS5000 is markedly better at distribution than other fixtures designed for 4×4 coverage because it is also somewhat larger than other fixtures. Competitive fixtures are about 32” to 34” on each side. Whereas the ViparSpectra KS5000 is almost 40” on each side.

Uniform coverage is what every grower should look for. As the prices of grow lights have come down, more and more growers are putting lights designed for 5’ x 5’ coverage into 4’ x 4’ tents and running them a little dim. The larger frames provide amazing uniformity, and the fixtures have all the power you would ever need in a 4×4 space. However, the up-front costs can be prohibitive. The ViparSpectra KS5000 is priced like a 4’ x 4’ fixture, but it takes a step in the direction of the 5’ x 5’ fixtures. It is physically larger and more powerful than other 4’ x 4’ fixtures in its class.

The large frame and algorithmically distributed diodes allow the KS5000 to be run quite close to the canopy. I measured the maximum PPFD at 1000 µmol/m2 with a hanging height of only 28cm (11in) above the sensor. Despite the low hanging height, the edges and corners are still covered with great density light. The lowest PPFD in the corner is 525 µmol/m2. The Average PPFD is 783.7 µmol/m2, which is well above our target of 700 µmol/m2. The Usable PPF comes to 1128.5 µmol. The power draw during my test was 488 watts. That means the ViparSpectra KS5000 had a Usable Photon Efficiency of 2.31 µmol/w, which is phenomenal for a 4’ x 4’ grow light.

The Samsung LM301h diodes put out some of their energy in the far-red wavelengths which is outside the range of PAR (400-700nm). However, the latest research shows that far-red light (700-750nm) is also photosynthetically active. So, after the PAR test with the Apogee SQ500 PAR sensor, I ran a second test with the Apogee SQ610 ePAR sensor. The ePAR sensor measures 400-750nm, which is all of the PAR light plus the far-red light.

At the 28cm (11in) hanging height, the maximum ePPFD is 1042 µmol/m2. The average ePPFD is an impressive 824.1 µmol/m2, which converts to a Usable ePPF of 1186.7 µmol. That means the ViparSpectra KS5000 delivered 58.2 µmol of far-red light, which is 4.9% of the total flux. Counting that light together with the PAR light gives the KS5000 a remarkable Usable Photon Efficiency of 2.43 µmol/w.

ViparSpectra recommends a somewhat higher hanging height at 40cm (16in), so I ran a second set of tests at that height. The Usable PPF is slightly lower at a higher hanging height, but uniformity of distribution is outstanding. The PPFD ranges from a minimum of 582 µmol/m2 to a maximum of 875 µmol/m2. In the ePAR range, the density values range from 615 to 910 µmol/m2. This distribution will ensure efficient photosynthesis and enable quality production across the entire coverage area.

The efficiency of the ViparSpectra KS5000 is reflected in the low operating temperature. I measured a maximum surface temperature on the LED bars at only 47.5 C (117.5 F). The casing on the driver was even cooler at only 41.0 C (105.8 F).

The on-board dimmer has preset options for 25%, 50%, 75%, 100%, external control. The dimmer is accurate in both the PAR and ePAR ranges. Growers will have success running the KS5000 at 40cm (16in) throughout a grow. In the seedling stage, 50% power will be ideal. During vegetative growth the dimmer can be raised to 75%. At the end of vegetative growth, before the flip, I would crank it up to 100%.

I think the ViparSpectra KS5000 offers some real advantages over competitive lights in this class. The larger frame and algorithmically placed diodes create great uniformity of coverage. The components and build quality are among the best on the market. The performance in a 4’ x 4’ space is outstanding.

The ViparSpectra KS5000 is priced similarly to other fixtures in its class, but with superior performance it has a better cost efficiency. With discount code DrMJCocoKS on Amazon and ViparSpectra.com, the cost efficiency is only $0.49/µmol. There are cheaper options, but this is a great price for a fixture with top components and superior performance. If you need a 4’ x 4’ grow light, the new ViparSpectra KS5000 is an excellent option.

Use Discount Code: DrMJCocoKS during checkout on Amazon or ViparSpectra.com

Impartial Testing and Reviews


At Coco for Cannabis, our mission is to help growers maximize the success of their cannabis crops by providing scientifically accurate information and sharing proven growing practices. We created this guide to share reliable grow light data and empower home growers with the best information about grow lights.

We always put growers first. We do not accept sponsorship or advertising. Grow light manufacturers may send us lights for testing. However, we receive no compensation from manufacturers for testing or for including their fixtures in our guide. We will always report accurate information and give our honest evaluation of each fixture.

You can support our work by following our links when you make a purchase. As an Amazon Associate, we earn from qualifying purchases. However, we have no interest in promoting any particular brand of light. Our recommendations are based on the science, testing and our honest evaluation. We want to provide you with the knowledge and information so that you can make the best grow light decision for your cannabis grow.

Disclaimer:


The information on cocoforcannabis.com should not be considered as financial, legal, or medical advice. You are responsible for knowing and following the local laws that pertain to cannabis cultivation, possession, and use. Decisions to grow cannabis should be made in consultation with a lawyer or qualified legal advisor. Decisions to use cannabis should be made in consultation with your doctor or medical professional.