Cannabis plants are happiest when they get between 10–12 hours of direct sunlight per day. As you'll likely have witnessed with your own eyes, weed plants grow really vigorously, and hence need a ton of solar energy to fuel their growth.

However, the LED plant growth light only needs 40W for each cannabis plant.So you only need 240W if you plant 6 plants.Let me introduce the best choice at240W led grow light.
ECO Farm ECOR Samsung LM301H 240W Dimmable Quantum Board with Meanw...

Idea for all growth stages, excellent full spectrum- white, red, IR and UV. The 3500K color spectrum has a good amount of both blue spectral output (400-450 nm for vegetative growth) as well as red spectral output (600-660 nm for flowering); The 660nm red and IR light is especially useful during bloom, where it speeds up flowering time and boost yields.Update aluminum board is thick and sturdy, doesn't put out a tremendous amount of heat, high-quality protective covers for cables;
Atreum Lighting VELA 240W Full Spectrum Horticulture LED Grow Light

Coverage：Flower 2'x4'
Power：240W (Nominal, 50VDC, 4800 mA)
PPF ：594 μmol/s
PPF Efficacy：2.6 μmol/J
CCT：3400K
Dimensions：853mm x 230mm x 35mm
IP Rating：IP65
ATREUM LIGHTING VELA LED MODULES ARE AN EXCEPTIONALLY POWER-EFFICIENT, FULL-SPECTRUM LIGHT SOURCE FOR HORTICULTURE APPLICATIONS.
Advance Spectrum 240W Sun Series Model E 4-Bar Full Spectrum LED Gr...

Get sustainable production of superior quality indoor crops with this 4-Bar Full Spectrum LED Grow Light. It is an excellent lighting solution for commercial horticulture. It mimics natural light and ensures it gets evenly distributed to every area for fast and complete plant development.
Advanced Spectrum 240W Sun Series Model E 4-Bar Full Spectrum LED Grow Light comes with a full spectrum design closer to the natural light. Plant exposure to the grow light bar boosts the terpene level. It ensures better and complete plant growth – from seedling to harvest. This high-performance LED grow light works well with plants grown in water and soil.
The plug-and-play system is easy to implement with minimal cost. All die-casting aluminum bodies offer great heat dissipation for the long life-span of the light. It ensures that the system stays cool and consumers get high output.
AGLEX M240 LED Grow Light Bar

About this item
MAXIMIZE YIELDS & CROP QUALITY - AGLEX M320 led grow light comes with upgraded SMD 3030 chips and 6 efficient aluminum bars, ensuring higher efficacy PPE 2.8umol/J and better heat-dissipation, longer lifespan. Max 2.8g yield per wattage with 30% higher average PPFD and 50% greater yield & quality compared with the old plant lights. Only consumes 320w with 672 LEDs , perfect coverage for 4.5x6ft , The 320w led grow light M320 will help you achieve maximum quality and quantity.
FANLESS ZERO NOISY & WARRANTY - No fans zero noise design, very quiet. The led grow light 320w is ideal for greenhouses, grow tents, stand rack, vertical farming, etc. AGLEX LED Grow Light provides truly 3 years standard warranty plus 30 days money back guarantee, and 7/24 satisfying customer services. If there are any questions or concerns, please feel free to message us. We will help you with great pleasure!