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.
Because the marijuana grow cycle is dependant on the hours of light the plants receive, artificial lights enable the indoor grower to begin the flowering process whenever they want.There are naturally disadvantages to using grow lights to grow marijuana. They often cost quite a bit especially the good ones.n general keep 400 w lights 30 to 45 cm above plants and 1000 w lights 45 to 75 cm above plants. Fluorescent light is fine for the growing stage but flowering plants really need more intense HID light.