| Room lighting from ceiling lights is for all practical purposes useless for orchids. In order to be beneficial your plants need to be inches away for fluorescents (and then only low light orchids such as phals and paphs) and no more than a few feet away for HID's of say 400 watts. Incandescents are generally not viewed as feasible to use as supplemental lighting because they are so energy inefficient (but if you did they would also need to be close). If you don't have enough natural light you will need to think about providing a specific "plant area" with specific lights set up just for them. Hope this helps. mike |