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ok im working with ak 47 and about day 35 to 45 days in 12/12 i have bad leaf burn that starts out with spots then eats up the leaves .i have indicas(blueberry/bubblegum) that dont have that problem at all . i heard that sativas like there ph at 5.9 to 6.5.my nuttirant mix is at 5.2,5.4 ph dose...