Halfandhalf
Well-Known Member
So I'm getting these yellow stripes on a lot of my fan leaves and new growth is kinda yellow. I tried upping cal mag and it seemed to help a little but I have this ring of yellow across a lot of the fan leaves like shown in the picture that won't go away (had some spots that looked like calcium deficiency and now that's completely gone at least). Could this be caused by my cob spectrum? 200w vero 29 3500k with two platinum p150's in veg mode (blue and red diodes mostly). My clones of the same plant in my veg tent under a mars 300 have barely a little yellow on a fan leaf edge or two but not nearly as much and new new growth is not yellow at all. This is in a coco coir soilless mix called botanicare slacker aeration. pH at 5.8-6.2. Guess I should mention the leaves also seem to have thick stems with heavy ridged leaves that seem to fold up easily because of that thick stem.
The yellowing and stripes seems consistent with a magnesium deficiency right? I ordered some epsom salt to test that but I also just put it in flower so I wasn't sure if its a good idea to use now. Has anyone else seen this problem?
The yellowing and stripes seems consistent with a magnesium deficiency right? I ordered some epsom salt to test that but I also just put it in flower so I wasn't sure if its a good idea to use now. Has anyone else seen this problem?
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