Growing plants without sun exposure aren't possible at all. But grow light changed that concept. LED lights are the most effective and easy process to grow plants at home with less chemical usage. They produce less carbon and have control over the lighting spectrum which is unimaginable with High-Pressure Sodium Vapor (HPS) lights.

For better yield you need better quality grow light. They can be too expensive. But necessarily you don't have to go for expensive ones as cheap LED grow lights can ensure you better yield too. You just have to find the right one.

Nevertheless, you may have no idea which cheap LED grow lights are of good quality. But as we are here you don't have to worry at all.

What Size LED Grow Light Do I Need for 4x8 Grow Tent?

The most important bit of equipment in your grow room is your light.

Why? Light is your plant's food, you need to feed your plants high-quality food for them to produce high-quality yields.

LED lights for weed are now considered the best lighting option by most growers due to their energy efficiency, durability, and full spectrum.

However, with all the options and technical jargon, finding the right light for your project can feel a little overwhelming.
To work out what size of LED grow light you need, you first need to calculate the exact size of your grow space.

When growing cannabis, a good rule of thumb is to use a minimum of 50 watts of light per square foot of growing space.

We want to flood our plants with light ( food ) so that they have lots of energy to produce big potent buds.

Therefore, we need to calculate the square footage ( length x width ) of our growing space.

We'll then multiply this number by 50w to give us the rough wattage of light we require.

EXAMPLE: I have a growing space that is 4ft long and 8ft wide. This gives me a square foot grow space of 32 ( 4ft x 8ft ). I would then multiply this number by 50w, which gives me 1600w. Therefore, in this example, I would require two LED grow lights that were at least 800w or four LED grow lights that were at least 400w.

How Many Plants Can I Grow with a 4x8 Grow Tent?

In general, each cannabis plant you grow requires at least 1sq ft of space.

After germination, I like to place one plant in a large 5-gallon fabric container, which has a diameter of roughly 1 sq foot.

My plant will stay in this pot until it flowers.

This allows the plant to grow big and strong without other plants or tent walls obstructing its progress. I also don't like transferring plants too often, as it puts a lot of stress on the plant.

So this as a guideline, I would be able to grow between 1–16 plants in my example above.

ECO Farm Z8–800 Samsung LM301B LED Grow Light

Features:
ECO Farm LED grow light adopts the latest high-yield LED technology, excellent white, blue, red, and ultraviolet full spectrum mixing, IR LED (3500K, 660nm and IR 760nm and 396nm UV), can accelerate the flowering and fruiting stage, very suitable Density buds. 2.8 The high energy efficiency of umol/J allows you to obtain a 30% higher output. The lamp can be used in business, households, planting tents, planting rooms, hydroponics, and soil growth. This 800W LED grow light is most suitable for 6x6 FT growth. The low energy consumption 800W LED grow light has 8 passive cooling strips so that the light generates less heat when it is working. Bring you considerable growth experience. The lamp has good heat dissipation and long life, and the electricity cost is reduced by 50% compared with HID lamps! The assembly and maintenance of the light bar are super. The module's light bar is easy to maintain, and different combination modes can be changed in the future.

TopoGrow Professional 800W LED Grow Light

Features:
Durable IP65 waterproof aluminum material used, Branded led chips and drivers provided. high Efficiency is 2.6 umol/J, delivers a powerful light output and uniform canopy penetration to resulting maximum higher yields. PPF is 2080 umol/s, maximize yield with 50% higher Average PPFD, achieve 60% higher yield & quality compared with the traditional led lights. Consume power is 800W, make it a High-End&High-Performance commercial grow light. User-friendly dimmer suits full-cycle home horticulture. The easy manual dimming could be adjusted range is 350W/500W/650W/800W/EXT, and the light could be daisy chain max up to 15 lights and could use master light to control. Wider 8-bar light for even & broad canopy coverage. IP65 waterproof a, make it a High-End&High-Performance commercial grow light.

Phlizon PH Bar 800W LED Grow Lights Bars

Features:
Phlizon grow bar series are the best solution for various urban farming systems., Full Spectrum Led Grow Light bars for plants growing, designed specifically for use as supplemental greenhouse lighting. Each bar 80W power. 4 bars,6 bars,8 bars 10 bars,12 bars for choice. Adjustable bar quantity to make much more convenient repair and replacement in the future. Safety FCC ETL Certified and IP54 Rated. Passive cooling, extrusion pure aluminum can 100% ensure heat dissipation. Plants will grow better under the Full Spectrum LED Grow Lights, as well their yield. will increase hugely. With a set of Grow Light bar, you can grow many plants indoors, including houseplants, orchids, and even some fruit and vegetable crops. By learning how plants use light and about the fixture options, you can select an indoor grow lights system that is right for the plants growing.

Factors that you have to keep in mind to buy the best LED grow light for a 4×8 grow tent

Budget
In general, quality products come with an expensive price tag. However, this is not always the case. Grow lights can be found in pocket-friendly budgets without compromising the quality.
Choose from our best grow light for a 4X8 grow tent depending on your usage. In case of home usage, We will suggest going for low or mid-range products. For commercial usage, choose an expensive one.

Spectrum
It is so much important to have a balanced diet for a sound body. Just like that plants need lights of the various spectrum. Different types of plants require different types of spectrum. For example, Heavy crops usually require a spectrum of high range, while aquatic plants grow well in low spectrum range.

If you know about the types of plant you are going to grow, then choose a range of spectrum suitable to it. You can research yourself or check this article for the relationship between spectrum and types of plant.

We will suggest you buy a full spectrum light to be on the safer side.

Energy consumption
A grow light may need to run 8 or more hours regularly. A high wattage light can make your electricity bill fly up. Hence, it's very important to keep an eye on energy consumption ratings.

We will suggest you always go for LED lights. They are expensive but have a better life span and save energy in a big margin.

Expected lifespan
LEDs lights are always preferable in terms of life-span. 10,000 to 20,000 hours are the common lifespan of most LEDs. Still depending on the manufacturer and quality of elements lifespan can vary. Even, some of the LEDs can last up to 1,00,000 hours.

The heat produced
We know the fact that most plants need both heat and light from the sun to grow properly. Depending on the plants, the level of required heat varies. Before buying one, you must check the level of heat produced by the light and its suitability with your desired plants.

Installation
Most of the grow lights have an easy installation method. However, few have exceptions and need some skill to fix. It is always wiser to go for a light that is easy to install following the manufacturer's guidelines.

Dimension
The Space of growing tents varies from user to user. As a result, the Dimension covered by an LED is an unavoidable factor. The good thing is that grow lights come in various dimensions. You may choose one considering your space.

The light produced
Apart from the light spectrum and heat production, light intensity is another factor that may harm your plant. The required intensity of light varies from plant to plant.

Excessive intensity or brightness may cause damage to your plant while low intensity may not be able to grow your plants properly. Depending on your plant, choose the right intensity.
It's better to go for a dimmable LED. It will give you a wider range of brightness. So that you can change the intensity depending on the plant you are growing.

Conclusion

Each and every LED grow light product in the list above is extremely versatile. They give your plants the full spectrum of lights needed for growth. Additionally, they save you money because they don't need much electricity and they are also built to last. Going along with these benefits, many of them have an amazing warranty so you can rest assured that you will be able to use them for years to come.

To achieve the best results, you will want to make sure that you choose the correct light for your stage of growth. This will help ensure that your plants grow to their full potential.
Overall, if you're looking for the Best LED Grow Light for 4×8 grow tent, you've come to the right place. They all have adjustable settings so that you can customize them for your needs and plant stage. They can even be used outside as well as inside because they are waterproof and have a long lifespan.