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==== LED Drivers ====
LED drivers can be categorisedcategorized into constant voltage and constant current, both with dimmable options. If your panel has a recommended voltage, it's best to select a constant voltage driver. Dimmable drivers are more expensive but worth it because your plant requires more light at the flowering stage than at the seedling stage, so you may wish to use less power initially to conserve power. Meanwell drivers are the industry standard for efficiency and lifespan.
 
 
== Light schedules ==
Common light schedules include 24/0 (24 hours of light a day), 20/4 (20 hours light, 4 hours darkness), 18/6 (18 hours light, 6 hours darkness), and 12/12 (12 hours of light, 12 hours of darkness).
 
Auto flowers can be grown with lights on 24 hours a day (24/0), but constant light can leave the plant with no time to recover from deficiencies, or stress in general.
It is a good idea to match the light schedule with the cultivar's [[Plant_processes#Circadian_rhythm| circadian rhythm]]; I recommend 20/4 or 22/2.
 
== Ideal light intensity of lifecycle ==
In the initial stages of growth when the plant is a seedling, it should be exposed to much less light than when in flowering.
 
life stage | PPFD
 
seedling | 100 - 400
 
Vegetative | 300 - 600
 
Flowering | 600 - 1200+
 
<ref>https://www.licor.com/documents/c8jrv1uxa6yasnrgy2esxksh0rkfhdik</ref>
<ref>https://www.mmjdaily.com/article/9112322/setting-light-levels-for-cannabis-growth/</ref>
 
 
 
== Light spectrum ==
The colourcolor of light is dependantdependent on the frequency of the light. see also [https://en.wikipedia.org/wiki/Electromagnetic_spectrum Electromagnetic spectrum]. Blue/purple light used to be standard in Cannabis growing but are slowly being replaced by full-spectrum lights. Throughout the plant's life cycle, it can be helpful to apply different ranges of the light spectrum.
 
=== High frequency light ===
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