By acquiring the best LED light for 4×4 grow tent, any crop will be much more efficient and productive. To this end, we analyzed the best tools for all the people interested.
So this means that growing plants and flowers is now much easier. Even a grow light allows for great versatility in the location of a crop. Many plants and flowers will be able to be grown indoors in a home or commercial store.
Best LED Light for 4×4 Grow Tent
|MAXSISUN 400W Grow Light, Remote Control Dimmable PB 4000 Pro LED Grow Lights for Indoor Plants, Full Spectrum High-Performance Samsung Diodes & Mean Well Driver for a 4x4 Grow Tent Veg and Flowering||Price & Details|
|Bloom Plus LED Grow Light BP3000 with 1174pcs Samsung Diodes Dimmable Grow Lights 4x4ft Coverage Full Spectrum Newest LED Grow Lights for Indoor Plants Commercial Greenhouse Veg and Flower||Price & Details|
|MARS HYDRO TSW 2000W Led Grow Light 3x3 4x4ft Coverage Full Spectrum Growing Lamps for Indoor Plants Daisy Chain Dimmable Veg Bloom Light for Hydroponics Greenhouse Indoor LED Grow with 684pcs LEDs||Price & Details|
|MARS HYDRO TS 3000W LED Grow Light for Indoor Plants 4x4 5x5 ft Commercial Grow Lighting Daisy Chain and Dimmable Full Spectrum Plant Growing Light IR Sunlike Led Grow Lamp for Greenhouse 1016pcs LEDs||Price & Details|
|Grow Light, VIPARSPECTRA Newest P2000 LED Grow Light 4x2ft Coverage Full Spectrum LED Grow Lights with Upgraded SMD LEDs(Includes IR), Dimmable Plant Light for Indoor Plants Seeding Veg and Bloom||Price & Details|
|Phlizon 2020 Pro Series 2000W LED Grow Light 4x4ft Full Spectrum LED Grow Lights with 2.8 µmol/J Upgraded SMD LEDs Dimmable Plant Grow Lamp for Indoor Plants Seeding Veg and Bloom||Price & Details|
|LED Grow Light SUNRAISE QB2000 3x3ft 4x4ft Dimmable LED Grow Lights with IR, High PPFD Upgraded Full Spectrum LED Growing Lamp with 648Pcs LEDs Commercial Grow Lights with Size 22.6"x22.6"||Price & Details|
|EnFun Updated EF-2000 LED Grow Light 4x4 FT Footprint Compatible with Samsung LM301B Diodes & MeanWell Driver Dimmable Grow Lights Full Spectrum for Indoor Hydroponic Plants Veg Bloom 576pcs LEDs||Price & Details|
|VIPARSPECTRA L 2000W LED Grow Light 4x4ft, with Samsung LEDs & Sosen Driver, Dimmable Full Spectrum Grow Light for Hydroponic Indoor Plants Seeding Veg and Bloom Commercial Growing Lamps||Price & Details|
|MARS HYDRO Grow Tent Kit Complete 4x4ft TSW 2000W Led Grow Light Dimmable Full Spectrum,Indoor Grow Tent Kit 48"x48"x80" Hydroponics Growing Tent 1680D Canvas with 6 Inch Ventilation System||Price & Details|
This certainly avoids many common problems such as insects and pests that plague plants and flowers. Beyond that, novice users with no experience with a grow light could make the wrong choice.
Best LED Light for 4×4 Grow Tent
Here the various options on the market may offer different features and advantages. To facilitate the ultimate choice, we included a review of the top 10 best grow lights. So to make the best decision, keep reading.
01. Maxsisun PB 4000 Higher Photon Efficacy LED Grow Lights
Those who wish to develop and improve flower and vegetable cultivation can find here the best use. In this case, it is a set of ideal light for a wide variety of flowers and vegetables.
In such a way that it is one of the best tools for those who enjoy making a grow tent.
By placing these lights in the proper position, you can optimize performance from any crop. The vegetative growth obtained is one of the most suitable for a complete horticultural cycle.
In particular, this set of lights can provide a complete lighting spectrum. So, adequate lighting can be obtained for the germination, clone, mother, vegetative and flowering stages.
Throughout all these stages, perfect coverage is received for a 4 x 4 flowering area. When it comes to a vegetative area, this lighting can be sufficient for 5 x 5 feet.
High level of efficiency
When it comes to using these grow lights, it is important to mention that the power consumption does not increase significantly. So you can get excellent feeding and care of vegetables and plants without worrying about high electricity costs.
That is why using this quality Led grow lights can bring great benefits.
This set of lights does not require fans to operate, so the operation is quiet. There is even a built-in aluminum heat sink that includes a thickness of 5 millimeters.
This way, it will be more than enough to control the functionality of this set of lights. On the other hand, the whole structure has a special coating that gives it a good level of waterproofing.
So this would be more than enough to prevent water from being a problem that deteriorates this set of lights’ functionality.
- Low power consumption
- Excellent coverage area
- Waterproof structure
- Intermediate lifetime
02. Bloom Plus BP3000 – 1174pcs LED Grow Light
Those who enjoy having a commercial greenhouse for flowers or vegetables can also use this option to obtain good results. In this case, it is an excellent technological implement that provides enough light to obtain higher harvest productivity.
Thus, anyone can achieve better results.
Here is another option that can provide great performance with the incorporation of LED lights. By incorporating this tool, the plants can get superior performance and faster growth due to the powerful blue light.
In this sense, the flowering time is notably accelerated, and the results are more abundant. Moreover, it is possible to obtain coverage for flowers of 4 x 4 feet and vegetables of 5 x 5 feet.
In this sense, this is a common size that most high-quality tools can offer. Here the energy efficiency is excellent, so these led lights transmit the illumination that vegetables and plants need.
One of the most favorable aspects of this set of LED lights is that it does not produce any sound during operation. The drivers are of high quality and allow for heat dissipation thanks to the thick aluminum coating incorporated.
This avoids the need to incorporate fans to lower the temperature of the entire structure.
When considering the design, it should be analyzed that the relationship between quality and cost is very balanced. The operation of this LED lighting structure concentrates the intensity in the center.
In this way, most of the light serves to unify from the center outwards. So this provides an even distribution of all the light for the flowers and plants.
- Excellent energy efficiency
- Optimal heat dissipation
- Optimizes productivity
- Intermediate performance
03. Mars Hydro TSW 2000W Full Spectrum Growing Lamps
This is a commercial LED grow light that is optimized to provide a good result in every crop. All people who want to develop their own or commercial crops only need to implement this LED grow light.
The daisy chain connection is very simple and allows up to 15 such tools to be connected.
Of course, one of the most important aspects is that the functionality is one of the most convenient for different crops. Here you get an excellent amount of lumens and a performance that is 30% higher than blurred led lights.
Moreover, the power consumption is not very high and exceeds the energy efficiency of traditional light systems. So, users will find with low power consumption to be able to optimize the results without increasing the electricity cost.
With 684 LED lights, the actual power of 300 W is quite enough. Beyond that, the plants can absorb 90% of the light emitted by this tool. So this allows the waste of light here is minimal.
A coverage of 3.5 x 3.5 feet can be obtained with the tool when it comes to a flowering scenario. In case people decide to opt for vegetables or some vegetable scenario, here you can get a 4 x 4 feet coverage.
This can be more than enough to get a small crop with a single tool that does not require too much electricity to operate.
When we analyze this tool’s light spectrum, we can notice that the spectrum is very similar to natural light. When it resembles the plants’ light, it is much easier to get the right results.
All the lights incorporated here allow the user to obtain growth and productivity much more suitable to their needs.
- Large quantity of LED parts
- Low power consumption
- Excellent light absorption
- Less coverage than other options
04. Mars Hydro TS 3000W LED Dimmable Full Spectrum Plant Growing Light
By considering the same brand as the previous model, we can mention that this led grow light is a much bigger tool. People will have the possibility to optimize their vegetable and flower crops by implementing this 3000 watt led grow light.
For this purpose, 1016 high-quality led parts have been included.
When it comes to getting a fast and efficient response, this set of lights can outperform other options. These led lights not only achieve a higher quantity but a higher quality of crops.
Beyond that, the lighting quality that this set of led parts can provide is very similar to natural sunlight. This is really what allows to obtain optimal and adequate performance for the cultivation of a great variety of plants and flowers.
In addition, anyone can increase the light brightness to the desired level according to each user’s needs. Particularly, this increase can be noted up to 20%, which is much more suitable for the proper growth of plants and flowers.
High energy savings
Additionally, the energy savings obtained in this set of led lights are also very suitable for most occasions. Here, energy saving is more than adequate not to increase electricity costs at the end of the month.
Even the efficiency level is maintained at all times because this is scientifically proven.
When it comes to providing the best flower lighting, here is 4 x 4 feet coverage. At the time when the vegetable stage is needed, the coverage is 5 x 5 feet.
Undoubtedly, this is sufficient to grow a wide variety of flowers and plants reliably. Compared to other options, these led lights can optimize the yield by 30%.
- Excellent performance level
- Low electricity cost
- Excellent coverage area
- Intermediate heat dissipation
05. Viparspectra Newest Pro Series P2000 LED Grow Light
One of the tools that incorporate an innovative design suitable for growing plants and flowers is many LED lights’ structure. In this case, just the right amount of lighting has been incorporated.
So that a large number of flowers and plants can grow quickly and efficiently without too much effort.
Excellent quality results
Adapting these lights to various plants and flowers’ needs is a very simple task for many users. So an excellent spectrum of white light and red light can be obtained here. Even this allows each growth phase to require less time and provide better results.
So, the results provided by this grow light are excellent commercially or privately. A large number of LED parts have been incorporated here to provide a wide range of illumination in a uniform and balanced way.
In addition, the different implements have been incorporated to be able to perform the installation without wasting time.
Low energy consumption
When considering this unit’s power consumption, we can notice that it is one of the lowest among all the existing ones. In such a way, people can enjoy an excellent result without increasing electricity consumption at the end of each month.
In the same sense, flowers can absorb much of this LED light.
When it comes to flowering coverage, you get a 3 x 3 feet area at the height of 20 inches. When people want to have vegetative coverage, the area increases to 4 x 4 feet and 24 inches.
This may be adequate for an intermediate growing area that does not require too much space to develop. Any beginner will be able to learn about the world of flowers and plants with this implement.
- Good heat dissipation
- Acceptable lighting coverage
- Excellent plant and flower growth
- Intermediate energy efficiency
06. Phlizon 2020 Pro Series 2000W Best LED Light for 4×4 Grow Tent
Of course, having a safe and reliable option for the correct growth of flowers and plants is very important in any type of cultivation. So, this tool is one of the most suitable when it comes to getting a safe and easy-to-use tool.
Here, an excellent amount of lights has been incorporated to enhance the growth.
In this tool, 720 led pieces have been incorporated to cover a large growing area. In addition to this, it has also incorporated an excellent amount of accessories to be able to work from the start.
Therefore, it is a very easy-to-use tool compared to the existing ones. It is also necessary to consider that it is the set of LED lights that optimizes the growth of any type of plant and flowers.
Beyond that, it is a completely waterproof structure to be installed in both outdoor and indoor environments. Undoubtedly, this provides greater versatility when growing different flowers and plants.
Efficient use of energy
This tool’s spectrum of LED lights can be adequately regulated according to plants’ and flowers’ energy needs. Besides, a very low level of energy is required to operate this set of LED parts.
Thus, using this tool does not increase electricity costs at the end of the month.
No fans have been incorporated this time, so the noise is practically non-existent. To reduce the temperature caused by the operation, a metal plate has been incorporated. On the other hand, the humidity will not be any kind of inconvenience.
So it is a structure of excellent durability and resistance that withstands any weather conditions. Even this may avoid needing some money for future repairs or heavy maintenance.
- Waterproof structure
- Excellent coverage area
- Easy to use tool
- An intermediate amount of LED tracks
07. Sunraise QB2000 Big Size Dimmable LED Grow Lights
Those who wish to expand the area of cultivation of plants and flowers can use this tool that provides an excellent result. This time, coverage of 22.6 inches x 22.6 inches can be obtained.
Hence, this may be quite sufficient to simply have an excellent growing area.
Compared to other options, this tool can incorporate an excellent spectrum of lights efficiently. In this sense, one of the best responses from plants and flowers can be obtained.
Among the built-in broad spectrum includes 740nm IR, 660nm, 6000k, and 3000k. All these can be more than enough to be able to obtain a certain growth of plants and flowers.
The high level of performance does not come along with high power consumption. On the contrary, power consumption is one of the lowest available.
By having the different spectrums of illumination, the user will not need to spend a large amount of money in the budget of the home’s electrical cost or a store.
Compared to older grow lights, this option can offer 50% energy savings. Also, a great yield is obtained due to the accelerated growth of plants and flowers.
In this regard, this structure can be ideally suited for 3 x 3 ft. to 12 in. flowering coverage as well as adequate plant coverage. The latter option incorporates 3.5 x 3.5 piece 20 inches.
On the one hand, this structure can provide an excellent lifespan that greatly outperforms many competitors. Undoubtedly this can prove to be very convenient as the costs for maintenance decrease significantly.
On the other hand, no fans have been incorporated, so the unit is completely silent. Heat dissipation is still adequate to avoid any kind of failure.
- Adequate heat dissipation
- Quiet operation
- Wide illumination spectrum
- Nonwaterproof structure
08. EnFun Updated EF-2000 High Efficiency LED Grow Light
To combine a high level of efficiency with low power consumption, this option is also very popular nowadays. On this occasion, a full spectrum can be obtained to have the right lighting according to each plant and flower.
Thus, the level of versatility of this structure is more than adequate.
For flowering coverage, this tool is suitable for 4 x 3.5 feet. In turn, when it comes to a vegetative footprint, you can count on a 4 x 4 ft. cordage. Besides here, a total of 576 pieces of LED lighting has been incorporated.
Even on some occasions, the turn can be a little larger than just four feet. By turning on this set of lights, you can get optimized growth of different plants and flowers.
So this will be most suitable for those people who want to reduce the growing time of flowers and plants. Even the functionality of this structure is very easy to use, which is perfect for novice users.
Optimal energy utilization
The energy utilization here is also very convenient as it requires less power consumption. Compared to other types of lamps, each of the LED parts incorporated here requires 50% less power consumption.
Beyond that, the performance in the growth of plants and flowers is still maintained on all occasions.
Here not only people can improve energy consumption as well as plant growth. An aluminum layer with the right thickness has also been incorporated to provide efficient heat dissipation. Therefore, fan operation is not necessary.
It is even highly valued for customers who want to have an option that does not produce noise at any time. In general, this implement has the capacity to operate for several hours without producing any inconvenience.
- Quiet operation
- Excellent light spectrum
- Easy to use tool
- Intermediate coverage area
09. Hyphotonflux HPF3000 High Quality Led Grow Lights
Another way to improve any type of plant and flower growing is by incorporating these led grow lights. This option has 1224 pieces of excellent quality that allow you to enhance any growing system such as an indoor hydroponic grow.
Even controllers and diodes have also been incorporated to get just the right performance.
Excellent quality results
When it comes to obtaining different spectrums of lights, here, 1224 pieces have been incorporated, offering 3000k and 4000k. At the same time, 660nm dark color can be obtained thanks to 48 pieces.
All this can be more than enough to provide an average of 2 g / w in terms of performance. Beyond that, the coverage area is also adequate. While the flowering footprint is 5 x 5 feet, the vegetative footprint is 6 x 6 feet.
This, in particular, maybe more than enough when it comes to obtaining a generalized yield of plants and flowers. Even this tool allows decreasing the necessary time of growth from seed to flower or vegetable.
Here the decrease in time means an increase in productivity.
Of course, energy efficiency is optimized so that the user does not spend a large amount of electricity at the end of each month. In this sense, people will have the possibility to obtain an excellent amount of crops with low electricity consumption.
Specifically, this is beneficial for all types of commercial and home growing areas or plantations.
Secondary characteristics include fanless operation. In such a way, this enhances the operation as this structure does not produce any noise.
At the same time, heat dissipation remains efficient due to the aluminum that has been incorporated in this structure. Undoubtedly, this provides greater versatility to install this structure in a large number of spaces.
- A large number of LED parts
- Adaptable operation for plants and flowers
- Excellent heat dissipation
- Intermediate power consumption
10. Viparspectra L 2000W High Efficient LED Grow Light
When it comes to good results, this dimmable grow light provides a full spectrum. In such a way that you can adapt the performance of these led lights to a wide variety of flowers and plants for efficient and fast growth.
At the same time, the lifespan of this structure is as adequate as the rest of the features.
When you start using this dimmable grow light, you can get a higher yield than any other type of growing. Light penetration offers the same result as when it comes to natural light.
In such a way that this structure includes the right amount of led lights required by each plant and flower of a given crop. It is even an excellent choice when it comes to having the right lighting for indoor hydroponic growing.
This structure can offer 20% more lighting for plants and flowers than other options. At the same time, the broad spectrum allows you to choose the right lighting according to the specific needs of each type of plant.
Adequate energy consumption
Here the energy consumption is appropriate and does not require a large budget for that. In such a way, a minimum level of energy consumption can be obtained while increasing by 50% the performance of anything done.
This is one of the most valuable aspects for users who want to get good results from a crop without a big budget.
Just as what happens with the best options, this structure has not incorporated a fan in its functionality. Thus, the performance of these grow lights is silent.
Even the built-in aluminum allows the heat to dissipate efficiently, protecting the durability and lifespan of each of the LED parts.
- Excellent durability and lifespan
- Low power consumption
- Quiet and adaptable operation
- The light spectrum is of intermediate quality.
User Buying Considerations for the Best LED Light for 4×4 Grow Tent
Here we have already discussed the best options for those who enjoy growing plants and flowers. However, it is also necessary to consider that not all of these grow lights provide the same functionality.
Therefore, to avoid making the wrong decision, the next points need to be taken into account.
Spectrum of lights
In this case, it is a very positive thing to have a wide spectrum or a full spectrum in each of these options. So a full spectrum allows optimizing the growth of plants and flowers.
This even means that the productivity of a crop is increased excellently. Here the functionality provides decisive support for growth. A broad-spectrum can cover all the needs of plants and flowers at every stage of development.
That is why any type of crop will be able to count on the best assistance and the necessary light to cover any type of need. Not all options offer a wide spectrum, so this aspect must be considered.
Durability and useful life
Those who need a tool for an extended period should consider the durability and lifespan of each option. Both the performance and function of LED lights are important to be able to accompany the growth and yield of any crop at all times.
In particular, the durability and lifespan of each LED part may differ by brand and model. Therefore, this factor must be taken into account before choosing a particular final option.
In this way, any crop can be much better cared for throughout the entire stage of a plant or flower.
Especially low energy consumption represents excellent energy efficiency of the grow light. So this aspect should be considered in order not to invest a large budget in guideline costs every month.
In general, we have taken into consideration options that optimize energy efficiency so as not to consume a large amount of electricity. Even most of the options optimize the energy absorption in the plants.
In such a way that this is another of the positive aspects since it allows to diminish to minimum levels the waste of light. Considering the energy efficiency allows decreasing the total costs of any crop, which improves the profits of the obtained crop.
Amount of heat
Here it is important to consider that different grow lights can incorporate different intensities. Each of these intensities is ideal for adapting this grow light to all types of plant and flower crops.
A particular plant or flower requires a certain amount of heat to grow well. However, it is necessary to get the grow light that suits the needs of a particular crop.
Those who need the best LED light for 4×4 grow tent for both plants and flowers in the same crop will need more versatility. Considering these aspects is crucial to avoid ineffective or poor growth of the plants and flowers in the crop.
This time the coverage you get is 4 x 4 feet in general. When you get this type of coverage for vegetables, it means that the coverage for flowers will always be a little less.
This means because the flowers need more light intensity to grow properly. Nevertheless, this space requirement should be considered. In general, people require a grow light to be installed inside a home or a commercial store.
So it should be considered that alight with these dimensions does not need much space. It is also possible to choose to grow lights with different shapes, such as square or rectangular. Even this can allow these tools to fit in a better way in one-hour spaces.
One of the aspects that allow manufacturers to compete with each other is the installation aspect. So this tells us that the installation should be simple and quick to perform.
Here it is just a matter of hanging this light fixture in the right place and at the right height. In any case, installation instructions are usually included to do a good job.
Of course, not all grow lights are easy and quick to install. Here it is best to avoid these types of options as there are much simpler grow lights. In particular, this prevents beginner’s errors from occurring.
Of course, the light produced by a grow light is important as plants and flowers need specific amounts. Even different plants need different intensities throughout the growing period.
So before buying a particular grow light, you should consider which plants and flowers you need to grow. Grow lights that do not provide the right amount of light can lead to poor growth or even burn the plants.
Of course, to avoid this, it will be enough to consider the amount of light that each grow light can provide.
FAQ’s for the Best LED Grow Light for 4×4 Tent
Q: What size LED light does a 4×4 cultivation require?
ANS: On the one hand, heat dissipation is one of the fundamental aspects depending on the number of plants or flowers in a given crop. Here it is necessary to take this aspect into account since an excessive amount of lighting could damage the plants considerably.
In turn, a grow cabinet with dimensions of 4 x 4 can offer between 500 and 1200 watts. Here it is also important to consider the type of plants or flowers. Different flowers and vegetables have varying requirements.
So the requirements of the different plants and flowers in a crop vary. This can certainly be very decisive when choosing the best LED light for 4×4 grow tent. Also, the most important thing is to avoid too little or too much lighting for the correct growth of the crop.
Q: How to select the right LED for cultivating light?
ANS: Some factors are important in choosing the grow light that the plants need. In this case, it is a matter of taking into account the type of plants and flowers that are needed in a given crop. Some plants may need moderate lighting, while some flowers need a lot of light.
In particular, these aspects are critical because too much light can burn some plants, and too little light diminishes flower growth. So the spectrum and the amount of light produced by a grow lamp are critical aspects to consider.
Even the spectrum is the ability of a grow light to cover all stages of flowers and plants. Also, there are other basic aspects to consider, such as the installation procedure, a waterproof structure, and heat dissipation.
Although all these aspects are secondary, they are also important enough to develop cultivation with a good level of comfort. If energy efficiency is added to the above aspects, the user will be able to choose the best LED to grow light.
Q: Is it possible to have too much light in a grow tent?
ANS: Applying too much light to a grow cabinet can be a simple matter if the dimensions of the growing area are not taken into account. Experts often consider that a growing area with dimensions of 2 x 2 feet only requires 100 watts of light.
This could be more than enough as an average level of lighting energy needs. In the same vein, when we talk about an area of 8 x 8 feet, the lighting energy needs can increase up to 1000 watts.
Besides, different plants and flowers have different lighting needs. Some plants may require an intermediate level of light, while most flowers need a lot of lighting.
Adding too much light to the same growing area could burn many plants or flowers. However, to achieve this, too much light must be added to the same growing area. Conversely, too little lighting can lead to poor plant and flower growth.
Q: Can seeds be grown with LED lights?
ANS: All users with the right LED grow lights can start growing a plant or flower from seed. For this, it is necessary to consider that the grow light should have a broad spectrum in its operation.
This means that this tool should consider the growth stage from the seeds of any plant or flower. Even many people can combine an LED grow light with a certain growing procedure such as hydroponics.
Anyway, the most important thing is the features that each LED grow light can offer. In the best cases, the same LED grows light can fully cover all stages of flowers and plants.
Q: Should I turn off the grow light at night?
ANS: On this occasion, experts strongly recommend applying an environment similar to that in which plants and flowers are found in nature.
All plants and flowers in nature are exposed to a period of darkness at night. So leaving lights on 24 hours a day and every day of the week can be detrimental to any plant or flower.
Even different plants and flowers require a period of darkness and a period of light that are different. For this, some guidance should be consulted about the periods of darkness needed by plants and flowers. Applying this accurately allows for natural and efficient growth.
Q: How do you know if your plant is getting too much light?
ANS: In cases where plants and flowers are getting too little light, some common signs may be present. Some of these signs are a dull green color, elongated stems, overly stunted leaf growth, leaf drop, or yellowing of many parts of the leaves.
Conversely, when flowering plants receive too much light, there are burned or scorched parts. Here the most important thing is to consider all these symptoms to implement the exact amount of light and darkness that each plant or flower needs.
Any cultivation of plants and flowers can provide optimal results with the right tools. To easily find the best LED light for 4×4 grow tent, this guide provides decisive help.
Of course, there is no such thing as the best grow light for all plants and flowers in general. On the contrary, this is about finding the best led grow light for certain plants and flowers in a crop.
Anyway, the task of finding this particular tool will be much easier thanks to the information we have incorporated in this article. With the proper equipment, it is easier to optimize the growth of a crop.
In this way, it will be much easier to develop a particular crop of plants and flowers inside a home or commercial store. In addition, no great technical knowledge is required to develop a crop.
Here, beginners in the cultivation of plants and flowers can achieve excellent results with the right grow light.