1 plant under 1,000 watts is getting plenty of light..unless its a huge plant...and no, bottom leaves dying isnt normal at any stage of the plants growth..you want all green and healthy leaves up till harvestIt's normal that some bottom leaves die because they can't reach the light or it can be a nitrogen deficiency, so don't freak out. But its a very good idea to star to feeding her, flowering is a hard process and she needs nutes right now for sure!!!