Raging Kush II 70° LED Grow Light Review: Unmatched Spectrum Control and Uniform Light Distribution

Hi, growers! Today, we’re diving into the features and benefits of the Raging Kush II LED grow light with 70-degree lenses from Scynce LED. If you're seeking an adjustable spectrum fixture that penetrates deep into the canopy while delivering uniform light, the Kush II is the perfect fit for your grow setup. 

Unique Lenses for Optimal Canopy Penetration

The Raging Kush II excels in two key areas: unique lenses and spectrum control. Available in two versions—120° and 70° —the Kush II's patented 70° optics offer a narrower beam angle with slightly less intense output. This design pushes light at least 30% deeper into the canopy compared to the 120° version. Ensuring your plants receive equal light intensity from all angles, this even distribution prevents hot spots and promotes consistent growth across the canopy. This makes it ideal for growing in tents, rooms, or commercial facilities.

Full Spectrum Control for Versatile Growing

One of the standout features of the Kush II is its full power spectrum tuning. This light offers unmatched control and versatility, allowing you to tailor the light to your exact needs depending on the crop or strain. The fixture contains four different spectrum channels: cool white (6500K), warm white (2700K), 660nm deep red, and 720nm far red. Using the Scynce LED Theia app, you can adjust the 490W of white spectrum from 2700K to 6500K, giving you control over the type of white light delivered to your plants. Additionally, the red and far-red channels offer up to 160W of power and over 600 PPFD of energy, which can be split between 660nm or 730nm, or completely turned off. The app also allows for dimming, scheduling, and the use of preset recipes.

Power Consumption, Certifications, and Warranty

I measured the fixture's wattage at various spectrum combinations. At full power, it drew 665 watts and 5.65 amps. Isolating the channels, the white channels drew around 513 watts, and the red channels drew about 160 watts regardless of the specific white or red channel combination. Overall, the measured wattages were pretty close to what Scynce LED states.

When purchasing the fixture, you can choose between a 120V, 240V, 277V plug, or flying leads. The fixture is UL, CSA, CE, FCC, RoHS, and DLC listed. It also comes with a 5-year manufacturer’s warranty and an IP66 waterproof rating.

Hanging Height and Coverage

The recommended hanging height for this fixture is 18-24 inches. In comparison, the Kush II 120° light should be hung at 6-12 inches above the canopy for maximum intensity. The maximum flowering footprint is 4.5 x 4.5 feet, but the fixture performs best in a 4'x4' space. Additionally, this light can veg an area up to 5'x5' feet.

PAR

The Kush II delivers approximately 1677 µmol/s of total light output at full intensity. The 70° optics offer the best uniformity among Scynce LED fixtures, though they aren't designed for peak light output. The fixture reaches nearly 1000 PPFD at 18 inches, but with very high uniformity and excellent penetration. It was designed to fill the gap between the Kush II 120° version and the Alpha II Greenhouse style fixture.

During testing in a 4'x4' AC Infinity Grow Tent at 18 inches, the readings were similar to Scynce LED’s results at the same height, pushing close to 1000 PPFD. Variations occured due to different PAR meters used for testing. However, like the PAR meter Scynce used, the Mammoth PAR meter and spectrometer I used also has an extended range from UV to IR.

Summary

In summary, the Kush II is a fantastic option for growers who desire a fully adjustable spectrum, excellent light distribution, and deep canopy penetration. The Kush II 70° is priced at $1,595 with FREE shipping in the lower 48 states. However, both this light and the 120° version are currently on sale for $1,200 until the end of the year (2024).

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Happy growing!