i have a seriouse problem my plant is in its 20th day of fowering and its growth is stunted and the main stem is turning a dark purple and what even more scary is that the top bud's and leaves are also turning a dark purple. i tried epsom salts and warm water but its not getting any better and now the leaves are turning a rusty orange around the tips. how do i get rid of the purple, its not part of the strain.