9 Things You Need To Know About Led Grow Cannabis Lights

image 8

Table of Contents

For many cannabis growers, the choice is often made to grow indoors or outdoors, but many times there is a problem: there is not enough suitable sunlight for the plants to grow.

If there is not enough sunlight, then the LED Grow Light is essential. Ultimately, to achieve the expected high yields, some sunlight needs to be used for indoor growing through high-quality grow lights.

If you are looking for information about Led Grow Cannabis Lights plants, or want to know more about Led Grow Cannabis Lights, then the next 9 points might be helpful for you!

LED Grow Cannabis Light Market Analysis In 2021

The Cannabis Business Times has analyzed the cannabis lighting market for five years, and the report shows that the market share of LED fill lights is growing.

In 2016, the share of LED lighting used in the seedling stage of cannabis was about 21%, with a lower percentage used during the nutritional growth period (17%) and flowering (15%).

More than half of growers in 2020 reported using LED technology at every stage of growth, making LEDs the most used type of lighting in the seedling, nutritional growth ,and flowering stages, with the number of participants using LEDs growing at a double-digit rate at each stage since 2016

types of lighting used – propagation 1

From 2016 to 2020, the market share of cannabis fill light situation can be seen, LED fill light in the nursery period from 21% to 69%, a very rapid growth.

The share of metal halide and T5 lamps declined a lot.

types of lighting used – vegetation 1

The market share of cannabis fill lights from 2016 to 2021 shows the very rapid growth of LED fills lights from 17% to 62% during the growth period of cannabis.

The share of high-pressure sodium and T5 lamps declined a lot, indicating that more and more growers are accepting the effectiveness of LED use.

types of lighting used – flowering 1

From 2016 to 2021, the market share situation of cannabis fill light can be seen that LED fill light increased from 15% to 62%, a very rapid growth.

The share of high-pressure sodium lamps declined a lot, indicating that LEDs are increasingly recognized by growers for their growing effectiveness and cannabis quality during flowering.

Darkless LED Octopus Cannabis Lights of The Past and Present

Grow Cannabis Lights Market Product Background

For the past 60 years, in the late 1950s and early 1960s, metal halide and high-pressure sodium (HPS) lamps have provided growers with the best choice for lighting because of their high photoelectric conversion efficiency, long life ,and relatively wide spectrum.

Light-emitting diodes (LEDs) are the latest generation of lighting technology in the horticultural field. LED technology has come a long way in the last few decades, and just as HPS lights were once the most efficient solution, LEDs now meet the same requirements for cannabis lighting with higher efficiency and additional features.

The advantages of LEDs are 50% less energy consumption, much less heat release, more consistent luminosity maintenance over time, and environmental friendliness.

Introduction of high-pressure sodium lamp

The current market share is relatively high MASTER GreenPower Plus 1000W EL/5X6CT high-pressure sodium lamp bulbs, with Gavita’s reflector lamp cover to use, the following chart for the Philips technical parameters of this sodium lamp.

introduction of high pressure sodium lamp

LED octopus cannabis lights why are 640/720/880W?

Sodium lamp because of its high temperature, the use of sodium lamp installation distance from the plant to more than 1m, LED cannabis lights can be used in 30cm and above the installation distance, cannabis in the flowering period requires PPFD between 700-800, the current 640W LED lights can not achieve this effect.

1000W sodium lamp PPF of the whole lamp is about 2100 * 0.9 = 1800umol / s, LED marijuana lamp if you want to replace the sodium lamp, in PPF this parameter should be as close as possible to the value of the sodium lamp.

image 2

From the current development of LED lamp beads, the whole lamp currently takes a reasonable spectrum and cost-effective situation, QE in about 2.8 is considered relatively high, the whole lamp power W = 1800 / 2.8 = 642W.

The following figure is 640W cannabis lamp distance from the plant leaves 40cm and 60cm conditions, 4 * 6ft working surface PPFD distribution chart.

distribution map of cannabis light ppfd

The origin of octopus marijuana lights

At present the cannabis indoor (Indoor) grow the field, the size of the grow tray has 43ft, 44ft, 46ft, 66ft as the main.

Because LED is a cold light source, close irradiation will not cause harm to the plant, to be able to irradiate 1 * 1.5 meters of the growing surface evenly, Fluence developed the first octopus products.

The whole light size 1087 * 1194 * 32mm, 6 LED light-emitting surface, basically covering 1 * 1.5 meters of the planting plate.

the origin of octopus marijuana lights

Introduction to The Application of Led Grow Cannabis Lights

Light requirements for each cycle of cannabis cultivation

Because plants have different lighting needs during the propagation, nutrition, flowering and retention stages of the mother plant, growers can adjust the amount of LED lighting, and test accordingly to optimize the growth for the desired species and specific characteristics.

When using LED cannabis lights, the room temperature can be adjusted 1-2°C higher than when using sodium lights.

Propagation & Cuttings 14 DaysVegetative Growth 21+ DaysVeg-to-Flower Transition3-7 DaysFlowering8-10 WeeksStock Plants (mothers) Slow GrowthStock Plants (mothers) Rapid Growth
Avg. Light Intensity Measured in μmol m-2 s-1150-200200 Increasinggradually to 450-550450-550Increasing to700-800700 – 800350-450500-600
Photoperiod Hours of light1816-24≤12121818
Ambient Room Temp. (Day)F ° | C °70-72 °F21-23 °C80-85 °F26-29 °C80-85 °F26-29 °C80-85 °F26-29 °C70-75 °F21-24 °C80-85 °F26-29 °C
Ambient Room Temp. (Night)F ° | C60-70 °F16-21 °C70-75 °F21-24 °C70-75 °F21-24 °C70-75 °F21-24 °C65-70 °F18-21 °C70-75 °F21-24 °C
Ambient Relative Humidity (Day) (RH)100%75-80% (early)55-67% (mid/ late veg)55-67%55-67% (early)50-62% (mid/ late flower)50-60%55-67%
Ambient Relative Humidity (Night)Same as daytime75-80% (early)55-67% (mid/ late veg)55-67%55-67% (early)42-57% (mid/ late flower)50-60%55-67%
Vapor Pressure Deficit (Day)00.67-1.00 (early)1.11-1.80 (late)1.11-1.801.11-1.80 (early)1.28-2.00 (late)1.00-1.491.11-1.80
Vapor Pressure Deficit (Night)00.50-0.75 (day)0.82-1.34 (night)0.82-1.340.82-1.34 (early)1.07-1.73 (late)0.83-1.240.82-1.34
CO2 Enrichment(Measured in ppm)1200-15001200-15001200-150001200-1500

Cannabis growing trays and main specifications

At present, cannabis cultivation mainly adopts the planting plate units of the size shown in the figure below, mainly including 4ft3ft, 4ft4ft, 4ft6ft, 6ft6ft.

Cannabis growing trays and main specifications

Main ways of growing cannabis

The current cannabis cultivation method is mainly using rockwool module cultivation and substrate culture

  • Rock wool culture
Rock wool culture

The cultivation mode in the above picture mainly uses rock wool modules for planting. This cultivation method is the mainstream mode of cultivation at present, and the proportion of large-scale planting farms or small-scale home cultivation is very high.

This planting mode requires a higher level of planting management, a better degree of automation, and better material handling. The water supply method adopts automatic drip irrigation.

  • substrate culture
substrate culture

The planting model above is closer to the substrate culture, mainly using the model of planting bags plus substrate, the general home planting will be used more.

Planting management is relatively simple and easy, compared to the above Rockwool planting module, substrate planting bags are larger, can hold more water, so the root system grows more space, the need for fine-tuned management.

But the disadvantage is to increase labor costs.

Cannabis planting tray arrangement

There is a planting license (large-scale) planting field, planting area is more square, so the use of planting tray specifications are more uniform, generally using 4 * 6ft size of the pot to the combination.

General planting column width 4ft, length by the site planning, by the number of planting trays to calculate the total number of lights, generally using a planting tray corresponding to a lamp.

Cannabis planting tray arrangement#1

At present, half of the planting areas of family-type or small growers are set up in residential areas, and the planting area is the same as the room area of the house, and there are many differences in specifications.

Therefore, the size of the planting trays used is not uniform, and generally, 46ft pots are used as the main combination, while 33ft trays are also used.

However, the total number of lights will be calculated according to the number of trays, generally using a planting tray corresponding to a lamp.

Cannabis planting tray arrangement#2

Cannabis each cycle LED lighting installation height

Recommended installation height of lamps for each planting period (640w as an example).

Planting cycleRecommended installation height
The first week of the implantation periodHeight 90cm
The second – third week of the implantation periodHeight 60cm
The third week of the implantation periodHeight 40-50cm
The second and third week of floweringHeight 40-50cm
After the third week of floweringHeight 30-40cm
led grow cannabis lights installation diagram

Led Grow Cannabis Lights needs to pay attention to much more than the above points, if you want to learn more about the relevant expertise, Darkless Lighting will be ready to answer you, and finally wish your plants can grow better!

Contact US

Phone Numbers





No.111,Baiyun Road, Yuexiu District, Guangzhou City, Guangdong, China.

Share This Blog

Leave a Comment

Your email address will not be published. Required fields are marked *

2 × one =

Get Catalogue & Quote

    Get Catalogue & Quote