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Indoor Horticulture: What Kind Of Grow Lights Do You Use?

Posted by Danielle Leger

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Nov 26, 2014 11:15:38 AM



About BudZLight



A fairly new but growing industry is LED lighting for horticulture. A new product being developed by EarthTron, is the BudZLight. The BudZLight will be an intelligent LED lighting system optimized for specific plant cultivation by being tuned to the specific light frequencies, intensity, and modulations that stimulate photosynthesis and growth.


What Are Your Opinions On Grow Lights? Let Us Know Your Thoughts By Taking A Short Survey!




Types of Indoor Grow Lights

A range of bulb types can be used, such as fluorescent/CFL and incandescent lights. There are also two types of HID (High-Intensity Discharge) lights used in indoor gardening: high-pressure sodium and metal halide. They each have their own sets of benefits when applied in indoor gardening.

Metal Halide Bulbs(MH)

These bulbs gives off wavelengths towards the blue/white end of the spectrum which imitates the hotter summer sun. Generally this is for a vegetative state of the growth cycle. If you’re growing foliage-producing plants then the spectrum emitted by metal halide is adequate.

High Pressure Sodium Bulbs(HPS)

These types of bulbs have a warm orangey red tint to them, imitate the warmer colors of autumn and fall used primarily for the flowering or blooming stage of a plants life. Using HPS bulbs would mimic the time when your vegetables and fruits are starting to grow, and when plants should start flowering. 

The major drawback to growing under high-pressure sodium alone, is that plants tend to elongate from the lack of blue/ultraviolet radiation.

Therefore, In many indoor greenhouses, a combination of metal halide and high-pressure sodium bulbs are used. Using these two types of bulbs, provides a well-rounded level of both red and blue spectrum lighting.


LED Lighting systems are highly energy efficient and the bulbs can last for years in comparison to HID lights which may only last one season. LED lights can be bought that emit different spectrums of light which will help to produce optimum efficiency in the different stages of a plant’s lifecycle. The same LED bulbs can be used at each different stage of the plants lifecycle by using different filters, eliminating the need to switch bulbs during the plant’s growth!


We want to know what your experience with indoor growing has been. Please take this short survey and tell us!

BudZLight Survey


Light Frequency


 Plants respond differently to different colors of light. Blue light or red light, have the greatest impact on photosynthesis.  

Many plants also require both dark and light periods, an effect known as photoperiodism, to trigger flowering. Therefore, lights may be turned on or off at set times. The optimum dark/light period ratio depends on the species of the plant.  

Light Intensity: Some plants prefer the high intensity of full sun, while others prefer moderate sun or shade. When using grow lights, the plant needs to be close to the light for highest light intensity. Light intensity is the most important factor in photosynthesis. Low-light intensity will result in weak growth, and plants that don't flower or produce fruits. Different kinds of grow lights give off different intensities of light.


Benefits of using LED Horticulture Lights:






  • Energy savings

  • High output of product

  • Long lifespan of bulb

  • Produces less heat

  • Eco friendly lighting

  • Reduce crop contamination





Indoor Grow Lights Are Used To Grow Different Types Of Horticulture:

  • An indoor farm in Japan is growing Lettuce

  • Medical Marijuana

  • Flowers such as marigolds & petunias - Purdue University is finding that sole-source LEDs can produce high-quality ornamental seedlings.


What Kind Of Grow Lights Do You Use?

We want to know your thoughts:

BudZLight Survey


Grow Rates LED Vs. HPS

  • Costing less to run, and without the need for expensive cooling systems, energy-efficient LED lights are the right solution for indoor horticulture. 
  • LED lights can be bought that emit different spectrums of light which will help to produce optimum efficiency in the different stages of a plant’s lifecycle.

Source for photo and information below

 LED-grow-light-comparison-grow-test-3-640x424"The HPS plant (Right) looked about the same under normal light. It was very yellow throughout the leaves with reddish areas and dark stems. (Left) The LED plant, however, was much more beautiful than I could tell from under the RhinoGrow. The leaves were almost completely purple with the same reddish areas and stems, and the buds had begun to take on a purple hue."

Quote from article: "I am quite impressed with the performance of the LED RhinoGrow 400. While the 400 watt HPS produced about 25% more bud, it also used 130% more energy and produced bud of a lower quality." 

Results Summary

  • Height:         LED 21″   –  HPS 25″
  • Potency:      LED 9/10  –  HPS 9/10
  • Appearance: LED 9/10  –  HPS 7/10
  • Flavor:         LED 8/10  –  HPS 7/10
  • Aroma:        LED 10/10 –  HPS 10/10
  • Electricity Cost (@ $0.12/kWh): LED $18.82 – HPS $43.78


Topics: led lights

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