Just noticed that one of my Lowryders' is starting to show some problems. It started off with purple along the tips and edges of the leaves and eventually spread and is now more of a black/brown with spotting and some discoloration. I believe that this problem also occurred in my last grow but I could never figure out what was the problem and it eventually caused the leaves to become brownish, brittle and had to harvest early. I'm positive it's not because of cold temperatures because these are running on a continuous light cycle and cabinet rarely goes below 67. What type of medium; soil or hydro?- soil What brand and type of soil? - FFOF/FF light warrior/ perlite/ N guano Indoors or outdoors?- indoor What strain?- Lowryder 2 How old is the plant?- 35 days What is your watering frequency and source of water?- Every 4-5 days, distilled water with cal mag added What, how much and when was it fed?- Fed 4 days ago with 1 TBSP of Big Bloom and 1 tsp Tiger Bloom What is the medium/runoff pH and PPM if in hydro?- runoff is about 6.1 right now, I've added lime and slowly bringing it up What are the temps and humidity in the room?- 75-80 F/ ~30% humidity What size pots?- 1 gal. Any bugs? Look real close. None. My plant also seems to be on the very short side, even for an autoflower. Right now she's stuck at 6 1/4 in. and has been that way for several days now. I don't know if the stunted growth is part of the problem or another one all together. Here are 2 leaves that I cut that seemed to be the worst. It seems to be covering the whole plant but only doing this on the big fan leaves. Please help guys.