Now that you've switched out the light. Wait atleast a few days befor doing anything else. Because what you do to your baby today might not take effect for a few days. I just flushed my girl yesterday because of a possible over fert. Today I want to mess like crazy but I know i have to restrain until atleast the third day to see if she's getting worse or getting better. Only the new growth will tell me. I've noticed that when a mistake is made and then adjusted. It shows in the older leaves for the rest of the grow. The older leaves may get worse but the new growth tells you if what you did worked. If a leaf is damaged and the plant feels it necessary to let it die and fall off in order to save the rest of the plant the old leaves will get worse and fall off. Just pay attention to your new growth. If that makes any sense. Im no expert with marijuana plants. Im on my second grow with seeds and clones, but I've succesfully grown everything from cacti to orchids and trees. I love growing marijuana. Its such a challenge.