Help! 1) PICTURE OF PLANT at bottom. 2) Growing indoor. Master x OG kush from clones 3) Watering schedule: when dry via meter every 3-4 days ph @ 6.5, Vita-grow 3 part nut. started at 1/4 strength upped to half dose as indicated on label for "herbs" 4) Growing Medium: black gold soil (orange flower on bag) great drainage, did great during veg. 5) What stage of growth: 5th week of flower 6) 400w HPS 3x3 tent RH 35-40 Temps: 80 lights on 70 lights off I started having problems after I started having a bout with Powdery Mildew around 1st week of flower after 2 weeks of veg. I used baking soda spray (washing leaves between weekly spray), then started with Green Cure and am using it to this date weekly in 1/2 tbls per gallon. The leaves started to yellow on older growth mid way up (hard to tell because I LST them) and now dead spots and dead brown/yellowing/ spots and the top fan leaves in the buds are purple underneith and on the stems of the leaf only. The lower leaves and buds have no purple. I thought it was a ph problem after the Baking soda, so I flushed each with 2 gallons of ph water finishing with a 1/4 strenth vita-grow 3 part (A,B&C) at 6.3-6.5 and the runoff was great at 6.5... Next day I saw no difference it was a little more yellow up top. I hit them with 1 tsp of Epsom salts/gallon after 3 days and hit them with a little folier spray of the same mix. They "seemed" a bit more green the next day but the brown spots kept growing and killing off the leaves. I trimmed the dead spots off and it seemed to slow the dieing but today there was more dead leaf and the yellowing tops and with purple undersides still on the upper portion. Now I have no idea what to do. How often can you folier treat with Epsom water?