Hello new grower here. Growing zkittlez auto flower I’m in day 34. The leaves and the pistols are turning brown. Im growing in 3 gal pots, 5x5 tent medium is a mix happy frog and ocean forest. I just started to add nutes since the soil already had enough to last for 30 days. I’m using the sf7000 led light. Which is pretty powerful light. My ph is always good. Have no idea what this could be. I provided a picture. 
