Critical purple autoflower

Well guys week 5 is complete and she looks to be doing fairly good! She is growing like a champ and right now im trying to figure out what to go to get my light higher, im growing in a closet so im hanging the light on the bar you would usually hang clothes and the canopy is about 6 inches from light surface and im sure she hasnt finished growing yet so i need to figure that out for a better grow. I'm also starting to see some new growth on the bottom branches have leaves that are slowly fading to yellow which makes me think maybe its not getting enough nitrogen? could be that once i flushed my soil from week 3 mistakes that i took out all of it and now it is lacking? I will keep an eye on it regardless but i am just curious what its doing and how i can fix it before it become a real big issue! That being said i am seeing tons of pistils pop up everywhere its actually quite amazing. I guess one thing i am curious of as well as one of the pistils on a calyx have turned orange im not sure what that means for me but ill be keeping my eye on it regardless! Hope you all enjoy this weeks update and i will make sure to keep updated further!