To answer your questions, no a plant can never have too much light unless it causes heat burns or even UV burns if the UV light is strong enough, which in most artificial lighting situations it isn't (save maybe sulphur plasma lamps). Short distance between internodes may be caused simply by the strain you are propagating. Indicas tend to have shorter internodal lengths because they are naturally shorter than most sativas. I wouldn't worry about it. Switch to your HPS when you decide it is time to start flowering. 1 month should be long enough but if you want a larger crop let them veg a bit longer. What wattage HPS are you using? Also what wattage fluorescent are you using? Also are they CFL or T12, T8, T5? When you start to flower I would suggest, only if possible of course, to start flowering soley with the HPS light you have to enduce vigorous flowering. I would say for about the first 2-3 weeks, then supplement the rest of the flowering cycle with the CFL/T12 or whatever you have to veg, given that it has the correct spectrum for veg which is about 5500-7500k or 620-650nm if you want to get specific.
Paht_Hed Reviewed by Paht_Hed on . I'm back with a few light questions! Hey guys and gals, I haven't been here in a while but I have a few questions regarding lights..... 1. I have a fluorescent grow light in a chamber with plants 1 month old about 2-3 inches away from the light. Not including heat, can a plant ever be "too" close to a light? The distance between leaves is extremely nill so I'm curious if this will affect bud output. 2. When is a good time to make the switch from fluorescent to HPS? Thanks in advance all! Rating: 5