Best 400W LED Grow Lights-Full Guide (2022 Updated)

 So, when choosing a 400W grow light for your indoor garden, you have settled upon using an LED grow light. Generally, LEDs are very powerful, with the ability to produce excellent yields when used in the right way. A 400 Watt LED grow light unit can provide a footprint coverage of about 3ft by 3ft.

The range may be different depending on the growth phase. You have the option of increasing the coverage area by using more than one grow light. We have identified four of the best 400W grow lights that you can use in your garden.

Why do We suggest LED Grow Lights (vs HID grow light)?

One of the deciding factors in choosing between LED grow lights and HID lights is that LEDs were typically cost-efficient than the HPS lights.

For many, this is the only factor that matters and this is the main reason LED lighting continues to enjoy huge popularity. That said, a select few companies are now making good lights that cost very little. But the initial cost of the light(s) is not the only cost you need to take into consideration. You need to take into account the complete cost. LEDs have become hugely popular and one of the most demanding lights which will not dig your pocket.

Another reason is LED grow lights use far less energy to generate the same amount of usable light as an HPS or an MH bulb. This drastically reduces operating costs and means that they turn out to be more affordable in the long run.

Furthermore, LEDs have a much longer lifespan than HID bulbs. Finally, the heat output matters. HID bulbs emit an enormous amount of heat, which will have to be dealt with. Cooling equipment is not cheap and neither is running it. Since LED lights run much cooler than HPS or MH lights, you save even more in operating costs. On the flip side, if you are using LED plant lights, you may actually have to heat your garden in the winter months, if you live in an area with a cold climate. But once you settle the garden the LED-grown light will do its job and within a few months, your plants will grow naturally.

There is a reason LED technology is often mentioned in the same sentence as alternative sources of power like solar: they are much better for the environment than traditional forms of lighting.

ECO Farm SP-400 Samsung Foldable Dimmable Full Spectrum LED Grow Light

Features:

The ECO Farm LED Grow Light uses an upgraded Samsung LM281B chip with 6 passively cooled LED strips, the professional SMD design provides even and wide canopy coverage, higher light intensity, and less light decay. Average PPFD is 30% higher, easily achieving a maximum yield of 2.5g per watt with incredibly high efficiency of 2.8µmol/J. A total of 1088 LEDs consume only 420W on a 4x4 ft growing area, resulting in a smaller footprint and better crop quality and quantity. Grow lights feature enhanced blue light (3000–5000K) and rich red light (660nm), plus infrared and ultraviolet light to provide more precise and uniform dynamic PPFD for all plant stages from seeding to flowering, accelerating growth and promoting crops growth yield. The dimming knob design can adjust the light intensity in the range of 0–10V according to the growing needs. It is the perfect sunlight grow light for full-cycle hydroponics, soil, grow tent/room growing.

Mammoth Lighting Fold Series MF04 LED Grow Light (Veg)

Features:

Mammoth Lighting was developed by indoor growers after years of careful trial and testing. Scientifically engineered to provide the highest level of PAR output and balanced coverage in LED growth markets. Mammoth LED grow lights are made of high-quality Samsung diodes. The light contains a continuous range of wavelengths from blue and green to red, creating a light mix that matches natural sunlight. Mammoth customizes its spectrum to optimize plant growth and increase yields while consuming less energy and reducing operating costs compared to traditional gardening techniques.

AGLEX M400 LED Grow Light Bar

Features:

AGLEX M400 LED grow light is equipped with upgraded SMD 3030 chips and 4 high-efficiency aluminium strips, ensuring higher PPE 2.8umol/J efficiency and better heat dissipation, longer lifespan. Compared to the old grow light, the maximum yield is 2.8 grams per watt, the average PPFD is 30% higher, and the yield and quality are 50% higher. 888 LEDs consume only 400 watts and cover 5x6 feet perfectly. This grow light comes with a special dimmer to precisely adjust the brightness. Levels 0–10 are available. This means you can clearly see the brightness level and record it as you adjust it. Don’t worry about the difference. This grow light of ours is foldable, can be folded 180°, lightweight design, easy to move and install, one person can operate.

Buyer’s Guide

Full Spectrum LED Grow Lights
Just like CBD, the best grow lights for plants are full spectrum! Full-spectrum, when it comes to lighting, means that the LED grow lights replicate the full spectrum of light provided by the sun. For a growing environment that’s as close to sun-grown as possible, but without the environmental complications of an outdoor grow, full-spectrum LED grow lights are the way to go.

How do Full Spectrum LED Grow Lights Work?
Full-spectrum grow lights provide the full range of light that your plants need to photosynthesize. As you may remember from science class, photosynthesis is how plants receive the majority of the food they need to thrive. Full-spectrum LED grow lights work by replicating the same sunlight conditions found in the natural world — giving your plants exactly the kind of light they need.

How to Choose the Best Color of LED Grow Light

What’s the best colour of LED grow light for indoor plants? Trick question — the best colour is all of them! While your plants may still grow under single-colour or narrow-spectrum lights, they will always grow best under full-spectrum LED lights, which replicate the full range of colours and waves found in natural sunlight. For the very best results for your indoor grow, choose a full spectrum LED grow light.

Conclusion

The need to use additional lighting for growing plants, especially in regions with insufficient sunlight, is undeniable. You should take care of your plants from the very beginning of their growth. I hope my LED grow light review has convinced you of this and helped you find the right appliance for your needs. After all, it has been scientifically proven that proper lighting can change fruits’ taste and aroma, which relates to plants as well. So don’t neglect using LED lamps.

Share your growing experience with other readers! What kind of lamps do you prefer? What colors do you use?