ViparSpectra XS 1000 LED Grow Light vs. HLG 100 R Spec Quantum Board

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ViparSpectra XS 1000 LED Grow Light vs. HLG 100 R Spec Quantum Board

The amount of grow lights available to buy is massive. Meanwhile, reviews, comments, videos from growing forums are enough to convince many people to buy a grow light. But here I’ll make a comparison between the ViparSpectra XS1000 LED grow light and HLG 100 Rspec quantum board LED grow light.

Before mentioning the products, it is necessary to figure out the differences between the two brands: ViparSpectra and HLG.


ViparSpectra is a popular brand in the grow light industry with over 10-year history. It is famous for using advanced manufacturing technology, effective product design, and efficient after-sale service. ViparSpectra’s P series lights, XS series lights have won a great reputation from most home growers.

Horticulture Lighting Group

HLG is credited with designing the “quantum board” LED grow light. A quantum board design is simply LEDs spaced evenly in rows on a LED panel. The idea is to spread light more evenly across the canopy. This QB-style light has become the most popular grow light in the recent market.

Surely, ViparSpectra XS 1000 and HLG 100 Rspec are all QB-style grow lights. But what makes XS1000 better appraised contributes to the following 6 features.

1. Basic Features:

ViparSpectra XS 1000 adopts advanced 252 pcs Samsung LM301B LED with high-efficient PPE up to 2.9 umol/J. It provides 100,000+ hours lumens with 150 watts of power. Passive cooling and dimmable design make this fixture easy to operate while consuming less electricity.

Comparatively, HLG 100 Rspec uses white light Quantum Boards, capable of covering flowering up to 2’x2′ space or vegging, clones in a 3’x3′ space. It has a total of 192 pcs Samsung LED. This fixture produces 15, 000+ Lumens with just 95 Watts of power. Yet, HLG 100 either has no dimmer, less-efficient power supply included with NEMA 1-15p plug.

2. Efficiency and Power Consumption:

As for actual watt consumption, the ViparSpectra XS1000 consumes 150 watts from the wall, while HLG 100 Rspec will only consume an impressively low 95 watts. It seems that the HLG 100 Rspec has its design stood out.

But things do not matter unless the efficiency has been mentioned. XS1000 emits an impressive 2.9umol per joule of energy consumed. But the 100 R Spec emits only 2.4umol/joule.

Here is a 10% off code (prviparxs10) exclusively for the ViparSpectra XS1000 LED grow light (sold on Amazon).

While there are 5% off codes for XS1500/2000/4000 at the same time.

Code: prviparxs15 is for XS1500 (5% off);

Code: prviparxs20 is for XS2000 (5% off);

Code: prviparxs40 is for XS4000 (5% off).

3. PPFD & Coverage Comparison:

The PPFD from the XS1000 will efficiently cover an area of 2’x2′ (2.5×2.5 in a grow tent due to reflection). The XS1000’s PPFD is just incredible (1202umol/m2/s at 12” hanging height measured inside 2x2ft grow tent at 12” height). Mostly because it’s able to maintain strong intensity even out to the edges of the 2.5ft coverage area.

The HLG doesn’t have PPFD readings. But it has listed 220 PPF on its official website. To make the two data into the same dimension, it’s not hard to figure out that XS1000 emits stronger light intensity than the HLG 100 RSPEC.

However, the coverage areas might make different stories. The HLG 100 Rspec supports the maximum 3 by 3 veg coverage and 2.5 by 2.5 flowering coverage. While the ViparSpectra XS1000 provides 2.5 by 2.5 veg and 2 by 2 flowering coverage.

Considering the PPFD and coverage, both lights are of their goodness and weakness. It’s hard to decide which one is better, while the next point will tell the answer.

4. Spectrum Comparison

Spectrum is one of the most important factors for grow lights. With that said, it’s still not a completely settled science, especially when it comes to growing plants.

The XS1000 and the HLG 100 RSPEC both claim to emit a full spectrum. Both use a white spectrum.

White spectrum lights include blue and red wavelengths. The full-spectrum wavelengths usually come from 420nm to 780nm. Blue wavelengths enhance vegetative growth and development. Red wavelength enhances budding, flowering, and fruiting. Infrared light promotes fruit to grow fullness. Plus, ultra-violet helps make improve plants’ immunity. The two types of grow light contain most of the important wavelengths, but not all the same in total. Here are some details.

HLG 100 SPEC spectrum:

The wavelengths are from 420nm to 780nm, which means this light covers a mere infrared light. The color breakdown is as follows: Approximately 10% blue, 30% green, 55% red, and 5% infrared. It’s a highly customized spectrum, far from the ‘typical’ blue + red combo you see on most LED grow lights.

ViparSpectra XS1000 spectrum:

The wavelengths are from 400nm to 800nm, which means this light extends in both ultra-violet and infrared light. The color breakdown is as follows: Approximately 15% blue, 20% green, 55% red, and 10% infrared. This is also an innovative customized spectrum.

Both of these lights emit a high-quality spectrum. The HLG 100 RSPEC emits a delicate-customized spectrum that its customers love. The ViparSpectra XS1000 also has an impressive white spectrum that customers speak highly of. Besides, ViparSpectra emits ultra-violet and infrared spectrum, which is longer than HLG lights.

5. Heat (or not):

Neither HLG 100 RSPEC nor ViparSpectra XS1000 lights utilize a fan. But ViparSpectra XS 1000 has built with an extended heat sink, which allows the board to dissipate heat effectively without fans. HLG does not possess that. Therefore, XS1000 possesses a better heat dissipation effect than HLG 100 RSPEC. To keep heat balance, HLG requires more fans to keep air ventilation. That means HLG consumes much more electricity on heat dissipation.

At the same time, good heat dissipation ensures a long lifespan of LEDs. ViparSpectra LED has over 100,000 hours of working time, six times longer than HLG lights. ViparSpectra light is far more cost-effective over the long haul.

6. Which one costs more?

The HLG 100 RSPEC sells at $149.00 both on Amazon and HLG official website. That is affordable for most growers in small-space growing. But comparatively, ViparSpectra XS1000 sells at $129.99 on Amazon. Except for the advantageous components and superior performance, XS 1000 LED grow light is far better than HLG 100 RSPEC. Also, each HLG 100 RSPEC costs 20 dollars more than every XS1000.

Apart from the two types of LED grow light, the growing market is filled with other similar alternatives, MIXJOY, Spider Farmer, Mars Hydro, VIVOSUN, etc. All of them perform just as well but are offered at different price points. Selecting a reliable light with affordable prices matters much to each grower.


As far as what is mentioned above, here comes to a summary concerning their key specifications.

XS 1000

Yields: 2.9g/watt

Diodes quantity: 252 pcs

Diodes type: Samsung LM301B LEDs

Driver Power: 150W Mean Well driver

PPE (PAR efficiency): 2.9 umol/J

Heat Dissipation: Passive cooling

Lifespan: 100,000 hours

Price: $129.99

Dimmer: Built-with a dimmer knob

Flowering Coverage: 2×2 ft at 14

Veg Coverage: 2.5×2.5 ft at 16

HLG 100 R Spec

Yields: Less than 2.5g/watt (estimated)

Diodes quantity: 192 pcs

Diodes type: LM301H & LM351H V2 Samsung LEDs

Driver Power: 95W Mean Well driver

PPE (PAR efficiency): 2.41 umol/J

Heat Dissipation: Need to install an extra fan

Lifespan: 14,000 hours

Price: $149.99

Dimmer: No dimmer

Flowering Coverage: 2 x 2 ft

Veg Coverage: 3 x 3 ft

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Country: United States