Cannabis seedings lux

Top Ways That The Lux Meter Increases Cannabis Yields

There are some ways that the Lux Meter can be used to increase your cannabis yields. If you want to have a higher yield and healthy growth of your cannabis plants, it is best to consider the Lux Meter, which is quite affordable. In addition, you are able to optimize and measure the amount of light that you are able to use in your cannabis grow operation. In so doing, it will increase your cannabis yields.

If you really want maximum cannabis yields, then you should ensure that your plants receive the right amount of light. You can ensure this by using the Lux Meter. Let us know look much closer at this device.

The Lux Meter

This device is very simple to use in your cannabis grow room. Now, why would you use this device instead o the PAR meter or the quantum light meter? The main reason is that it is less expensive. You could pay as much as a thousand bucks for the PAR meter, but the Lux Meter is so much less. In fact, you can get a Lux Meter for just twenty dollars. Why do you need a light meter like this?

The Benefits

This device helps to increase cannabis yields. Obviously, this would be a benefit to the cannabis grower. When the Lux Meter is used, it helps to determine the optimum spots that is inside the grow room or the right distance between the light and the plants. You will be able to tell when the light is insufficient to result in cannabis yields. The Lux Meter also informs you when you need to replace grow light bulbs since after a while, they have to be replaced. So, with this device, you will be able to tell the specific time when the bulbs have to be replaced.

How to Use a Cheap Lux Meter to Increase Yields

Have you ever wondered if there was some way to measure how much light your plants are receiving in your indoor cannabis grow?

Well, there’s a solution – a lux meter! Lux meters measure brightness. “Lux” is the measure of how many lumens per square meter are being received at a point in space. Lumens is a measure of light. So, in other words, a lux meter can tell you the amount of light received at any specific point in your grow area.

How does a lux meter help you?

Bigger Yields – Plants which get the right amount of light grow faster and produce bigger yields. A lux meter helps you find the “sweet spot” for your grow light where your plants get the highest amount of light without getting burned. It also helps you space out your plants and try different configurations with your light to maximize the amount of plant matter in the sweet spot.

Test Your Bulbs – You can use a lux meter to find out when you need to get new bulbs. Most grow lights with replaceable bulbs get weaker over time and need to be replaced every few grows (some more than others, for example LEDs can last for years). A lux meter can help you know exactly when it’s time to replace your bulbs.

Healthier Growth – You can find out when certain parts of the plant are getting too much or not enough light. Lux meters can also help you avoid light burn caused by too-high levels of lux.

Better Than Your Eyes – It can be difficult to just look at a space and know exactly which parts are getting the most light. We try our best, but a lux meter can show you small adjustments that make a big difference. Sometimes moving a plant or adjusting a grow light by a few inches can make a surprisingly big difference.

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The grow shown below was the first time I ever used a lux meter. For this grow I was using a 250W HPS light for the first time. I wasn’t familiar with how far to keep the light away from my plants. Luckily, I had a lux meter to give me definitive answers. I started testing light levels and how they vary with the position of the light distance and the plants.

I found out that 11-12″ was the best distance to keep my 250W light from these plants

And I kept testing lux levels throughout their life!

As the plants grew, I kept checking to make sure they were all getting the same amount of light. After my plants hit the flowering stage and started making buds, I found out that I could get more light to ALL parts of all the plants by moving everything 3 inches to the right. How crazy is that? There’s no way I would have figured that out on my own just by looking at the plants. It all had to do with the shape of the plants and how the colas were making shadows compared to their position underneath the light.

Here’s a quick video showing you what I mean:

So a lux meter gave me the tools to get bigger yields by getting more light to my plants. The best part is I didn’t have to change my grow light – I was able to get better performance out of the same lights with different positioning.

Using a Lux Meter for Different Types of Grow Lights

As you would probably guess, a lux meter measures “lux” (a measurement of “luminous flux” in an area). Roughly speaking, lux measures the amount of light visible to the human eye. However, some grow lights produce light in a part of the spectrum (infrared and ultraviolet) that can’t be seen by human eyes. A lux meter doesn’t count that non-visible light and would give a reading that is lower than the actual amount of light being produced that the plant can use.

A lux meter also doesn’t measure PAR (Photosynthetically Active Radiation), which is a term you’ll see a lot when talking about grow lights. This is because PAR measures light that can be used for plant photosynthesis, while lux measures visible light for humans.

So it sounds like lux meters aren’t helpful for grow lights, right? Nope!

The range of light used by plants and the light spectrum visible to humans is surprisingly similar. You can buy expensive equipment to accurately measure light levels in the PAR range, but a lux meter is often enough for a hobbyist grower to get a good idea of how much light plants are getting. Just remember your measurements are an estimate and leave a little wiggle room for error.

Note: There are expensive light meters which are more accurate for comparing light levels between different types of grow lights, but the lux meter we recommend on this page is a good starting point. Honestly, we haven’t had the need to get a more advanced model. Just remember that if your grow light produces a lot of Infrared or especially UV light (like LEC grow lights and some LEDs), your plants will receive more light than what is being measured on a lux meter.

The chart below shows which wavelengths of light are visible to humans. In a way, this is also a chart that shows what type of light is measured by a lux meter.

How much lux do you want to deliver to your plants?

This is a quick overview. As mentioned above, a lux meter only gives you a rough estimate. Here is our complete tutorial on how far away to keep grow lights from plants.

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Quick Guide – Lux Levels for Optimal Cannabis Growth

Life Stage Maximum Good Minimum
Vegetative 70,000 lux 40,000 lux 15,000 lux
Flowering 85,000 lux 60,000 lux 35,000 lux

< 15,000 lux– sparse or “stretchy” growth – plant isn’t getting enough light
15,000 – 50,000 lux – a good amount of light for healthy vegetative growth
45,000 – 70,000 lux – the optimal amount of light for cannabis plants in the flowering (budding) stage. If grow lights produce a lot of UV light (such as LEC), stay on the lower side of this range
70,000 – 85,000 lux – a lot of light, some strains thrive at this light level, but some plants (especially auto-flowering and Indica strains) lose their top leaves early under this light intensity. At these levels, lights need to be kept further away for healthy growth
> 85,000 lux – at this light intensity, you’ve hit the plant’s “saturation point” which means your plant can’t use all the light (most strains will experience light bleaching or other major signs of stress at this level!)

What Happens If I Give My Plants Too Much Light?

The amount of light you get from direct sunlight on a bright, sunny day is 40,000 up to about 100,000 lux. At the high end, the sun provides more light than the plant can use. Imagine a cannabis plant in a pot in the desert – the direct sunlight would be too much.

When growing cannabis, you don’t really get any additional gains by adding more light to get over 85,000 lux. Not only is it the extra light wasted by your plants, but too much light can also actually give your plants unsightly light burn or cause it to lose its leaves early!

After my experience with this handy little tool, I highly recommend getting a lux meter, especially if you’re not as familiar with the grow lights you’re using. A lux meter lets you compete with cannabis growers who have bigger lights!

Here’s the Lux Meter I use…

A Lux Meter is super cheap! Get more out of your grow lights!

How to Use a Lux Meter to Increase Your Cannabis Plant Yields

What is a lux meter and should you get one for growing marijuana plants?

How to Use a Lux Meter to Increase Your Cannabis Yield

Light is very important in determining the overall health and performance of the plant. Alongside airflow, space, and availability of nutrients, lightning is pivotal if the grower intends to get maximum yield from the cultivation process. It is then important to ensure that the plant and grow area has access to an adequate amount of light regardless of the grow technique, outdoors or indoors.

The importance of adequate lighting to the success of a grow operation makes the knowledge of how to measure the amount of light the plant is getting a huge advantage. This doesn’t just ensure that the cultivation process is properly modulated, it greatly improves the probability for success.

The equipment used for this immensely valuable process is the lux meter and in here I’ll explain deeply what it is, it’s benefits, etc.

What is a Lux Meter?

A lux meter is an electronic device that is used to measure the amount of light in lumen per meter squared in the grow room area. The unit of measurement of the lux meter can also be simply referred to as lux. A lux meter is a simple tool that is very beneficial to every grower and helps in the perfection of the cultivation process to maximize yield.

Quantum meters and PAR meters are used by professionals to determine the amount of photosynthetically active radiation that is available for the plant to photosynthesize. These meters are more sensitive than lux meters however they have a major downside with respect to cost. Unlike lux meters which are relatively cheap and could go for as little as 20 pounds, PAR meters are relatively expensive as they go for as high as 1000 pounds. For a grower, a lux meter easily meets the needs that it is required to cater to as it accurately measures the amount of visible light in the growing area which provides the grower with the information needed to interpret the health of the plant.

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Benefits of a Lux Meter

A lux meter is very beneficial to the growing process as it helps a grower perfect the cultivation process in several ways. A couple of the benefits of a lux meter include:

Increase in yield: With the knowledge of the amount of light entering the grow area, the grower is equipped with important information that helps him/her ensure the cultivation process is properly done. The use of the lux meter allows the grower to known the perfect spots in the grow area with an optimum amount of light needed to sustain and promote growth. It also allows the grower to know the blind spots of the grow room that is not getting enough light. This helps the grower to ensure that the plants all get equal access to light which in turn increase and maximizes the yield of the produce.

Prevention of plant health problems: With the knowledge of the amount of light reaching the grow area, the grower is equipped enough to protect the plant from health problems arising from too much light or less than the amount of light needed for sustainability. When the cannabis plant in your grow area is exposed to too much light, the plant is likely to suffer from a light burn or bleaching which frustrates the growing process while when less than adequate light reaches the plant it is unable to actively photosynthesize and can show growth defects. Therefore, the use of the lux meter helps the grower to protect the plant from such health problems.

More efficient than the eyes: Many growers are used to physically assessing and determining the amount of light that is reaching the grow area especially when using white lights indoors. Lux meters however are more effective and efficient than the physical eyes in assessing the amount of light as they help to determine the distance to the source of light that affords the grower the chance to optimize the amount of light reaching the plant.

Helps to replace HID grow lights: Lux meters help to determine when HID grow lights which have definite lifespan begin to grow dimmer and allows the grower to know when they need to be replaced.

It is also important that a grower knows the amount of light that is optimal for cannabis clones or seedlings, for the vegetative plant as well as the flowering plant.

Readings within the range of 5000-7000 lux are suitable for clones or seedlings.

15000-50000 lux are perfect for vegetative cannabis plants

while a range of 45000-65000 is suitable for the flowering plant.

The maximum amount of light that the cannabis plant for work with is 75000 lux as lux meter readings of 85000 lux and above are already too much and are bound to promote light stress and bleaching in the plant.

It is also important that the readings of the lux meter are properly done by the grower to ensure accurate readings. Different readings should be taken at different parts of the grow room and at the varying heights of the plant canopy for definite results.