nute burn or what?

fabio75

Member
ok i got a couple of problems during my second week of veg. The ends on the first fan leaves (bottom) are turning crispy like. what could this be?
another problem is that the top tips of some of the leaves are turning a real, real light yellow/tan color.
Growing in promix bx with Mycorise and about 20% worm castings..
 
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