Yes, Global Warming really is happening, and the evidence is overwhelming. September 23 at 5:26am Â·. Rignotâs team found that Greenland's glaciers flowing into the ocean are grounded deeper below sea level than previously measured.
If you want your marijuana plants to start pre-flowering just change the light cycle to 12 hours on and 12 hours of complete darkness. Why does this work, well letâs think about how plants are in their natural environment.
The growing cycle is also controlled by light. This is one of the main advantages of growing marijuana indoors. Initially in the grow period (vegetative), lights are kept on for approximately 18 hours a day. When you want the plants to begin flowering the light is restricted to 12 hours light (and 12 hours dark).arijuana Lighting. All plants need light and there is no sun indoors. The light provided by the sun needs to be replaced with an artificial light source. Incandescent lights, like regular light bulbs, simply won't cut the mustard, they put out light in the wrong spectrum and are too costly to run.