Light: Difference between revisions

In ideal conditions, Cannabis can absorb 1500 - 2000 umols/s in the best case so we want to create that much light across the whole plant. This means that the light needs to be powerful enough to deliver this intensity over the area the canopy will occupy. Equipped with a powerful and efficient grow light you may be tempted to use as much power as you can afford to increase yield, but this is often not the best strategy; leaves can be damaged by overexposure to light (and heat) which will decrease yield. Slowly increase the intensity of your light over several days by increasing power draw by 5-10 watts a day and observe the leaves. Any yellowing leaves can be a sign of light stress, this may be accompanied by curling leaves which is a sign of heat stress, often from lights being too intense. Note also that seedlings require less light than flowering plants

== LED Drivers =CFL===

The colour of light is dependant 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 slowing being replaced full-spectrum lights. Throughout the plant's life cycle different light spectrums are more important