• English
  • South Africa(ZAR R)

No relevant currency found

/ /

HID to LED Grow Lights: A Guide to Switching

Mar 13,2023 | MEIJIU-ZA

LED grow lights are quickly becoming a popular choice among growers due to their energy efficiency and ability to control yields. While the transition from HID to LED lighting may seem daunting, this guide will provide you with an overview of the key considerations you need to keep in mind.

Finding the Right LED Lights:

One of the most important aspects of switching to LED lighting is finding the right fixtures. To maintain the same nutrient levels for your plants, it's crucial to ensure that the new LED fixtures have a similar PAR output to your old HID lights. The PAR output is measured by the PPFD range, which you can find listed on the LED fixtures. To determine the PPFD of your current setup, use a light meter, and purchase LED fixtures with a similar PPFD range. Additionally, you should consider the distance between the fixture and the canopy when choosing your LED lights.

Temperature Regulation:

HID lights tend to generate more heat than LED lights, which can make temperature regulation a breeze with LED lighting. Infrared energy from HID lights can significantly raise the surface temperature of your plants, whereas LED lights produce little to no infrared energy, resulting in plant surface temperatures only a few degrees higher than the room temperature. Keep in mind that plants grow best at different room temperatures under HID and LED lights, so be prepared to adjust accordingly.

Plant Growth:

Switching to LED lighting can change how your plants grow, which is why you need to be prepared for some adjustments in your grow space. Plants tend to stretch when they sense they are being shaded and exposed to more far-red light, leading to longer leaves and stems. With LED lighting, you have control over the color spectrum, which allows you to tailor plant growth and prevent or encourage stretching.


LED lights are more electrically efficient than HID lights, which means they allow for a warmer ambient temperature in your grow room. While warmer temperatures are great for plant growth, they can also affect the humidity of your grow room. To prevent issues, use a hygrometer to monitor humidity levels and invest in a dehumidifier if necessary.

In conclusion, converting from HID to LED lighting is a complex process that requires careful consideration of various factors. From finding the right LED lights to monitoring temperature, plant growth, and humidity, the key to success is being flexible and open to adjustments during the first grow cycle with LED lighting. By following this guide, you can ensure that your transition from HID to LED lighting is a smooth and successful one."