Lush healthy plant all through grow. Now halfway through week eight. Woke up to brown/rust colored spots and whole leaves dried and crispy. Temp rose but only to 78*F. I just started to flush so last water was only that. Temp 68-78. Humidity is at 45%. Soil PH at 5.8. Using FFOF with about 30% perlie. FF nute trio with blackstrap as well. Do not use the sledgehammer but did flush plain H20 3 days ago. Keep in mind this was all over a 24hr period since last night.... Before.. Now.. Some of what came off with better crispy shot... So questions.. What happed/is it? Can i get another week or two out of her? Will it spread to the bud? Or pull her early?