Hence, the total light power required for a 4×4 grow tent space is near around 800-1200w. You can source that from one 1000w light or a couple of 600w lights. Many growers can say that one 600w light at a close height can be good. But merely a 600w light is not sufficient unless you're growing in a 3×4(or smaller tent).Let us understand some of the LED lights.
ECO Farm GL 800W Samsung 281B PRO Chips LED Grow Light

ECO Farm GL series light with Samsung LM281B+ Pro； 640W has 2808 LEDs,800W has 3744 LEDs,1000W has 4680 LEDs; Which can achieve as high as 2.9 umol/J of energy efficiency, so that it provides the powerful light output and uniform canopy penetration to achieve high yield. The full-spectrum grow light from 3000K+5000k+660nm+ir 730nm+UV 395nm is infinitely close to sunlight, providing a complete natural spectrum, speeding up the growth and flowering time of plants, achieving higher yield, and being suitable for the growth of plants at all stages.
TopoLite 720W Full Spectrum New Tech Professional Version LED Grow ...

LED 720W Grow Light
Light Source: LED PPF: 1944 umol/s
Input Power: 800W Efficacy: 2.7 umol/j
Input Voltage: Autosensing 100V-277V
Mounting Height: ≥ 6”(15cm) Above Canopy
Thermal Management: Passive
Lifetime: 50,000hrs Power Factor: > 90%
Colour Rendering Index: 90ra Ambient Temperature: -40-40°C
Chip: Branded lamp beads
Quite LED Grow Light: High-End & High-Performance Self-Heating Dissipation Feature. This fixture get rid of traditional loud fan. Quite running and excellent heat dissipation function.
Friendly Use & Wide Coverage: 4FT with 6 light bars which perfect for a 4x4ft growing area. More effective coverage area than any reflector series lights.
Best Service: We are a professional LED light manufacturer with strong R&D team and many light tester. If you have any problems, please feel free to contact us. We will provide you with completely satisfying reply.

Mammoth Lighting Commercial Series 10 Bar 800 Watt LED Grow Light

The Mammoth Lighting Commercial Series 10 Bar 800 Watt LED Grow Light has been designed and scientifically engineered to deliver the highest level of PAR output and balanced coverage available to the LED grow light market today. Get increased yields and lower your costs with more light bars, more diodes, and a larger footprint than any comparable LED grow light. The Mammoth LED grow lights are built with high-quality Samsung diodes.
Features
More light intensity in µmol/s through advanced optical design
Slim vertical profile conserves precious vertical real estate
Uniformity and intensity can be fine-tuned by adjusting the built-in dimming knob.
EYE HORTILUX Ascend LED 700-ES Grow Light

BENEFITS OF UV
Increases resin production
Improves taste and smell
Causes more branching and less stretching
Increases root mass
BENEFITS OF FAR-RED
Increases plant biomass
Triggers flowering
Enhances flower size
Improves efficiency of overall spectrum