Not sure what's causing this.

Hot_Pepperz

Active Member
Hello all
Not new here, but new to posting. I have a GG#4 growing in almost it's 3rd week of flower. I'm growing in coco mixed with Ocean Forest with a little Down to Earth "Rose & Flower + Bone meal", a little azomite, and a little dolomite lime. The plant mostly looks good, but I starting noticing a few leaves not looking so healthy in the last few days. They seem to be the larger, older fan leaves and not the smaller ones. Initially, I thought possibly a cal mag issue or just magnesium, but I'm also
wondering if it's a phosphorus excess or deficiency. I would think that the azomite, dolomite, Down to Earth fertilizers, plus the occasional Roots Organic
cal mag would be providing enough.
The newer leaves on the top (closest to the light) seem less green and a little more narrow. I'm not sure if thats normal either. I'm growing in a 3x3 using a 425w Timber (cob), I have a 6 inch inline and two 6 inch fans always running, my temperature averages around 76 at the lower part of the tent and in the low 80's higher up (which makes sense). My humidity averages between 45 to 55 and I keep my light about 16 inches from the canopy.
Do any of you a clue to what this might be? I am the Root Organic Cal Mag every few waterings, but have read to cut the calcium in early flower and just use
a little epsom salt if needed. I'm watering about a half gallon of RO every few days with a ph at about 6.7. Because I'm growing in what I think is organic, I'm not letting it get to much run-off. Any help is appreciated!20200705_204254.jpg20200705_165843.jpg20200705_165850.jpg
 
I think you're correct....she's short on P and she's short on Mg. Epsom salt will fix the Mg issue. How you address the P issue is a little different. I would be sure your pH is on firstly, especially so you're sure any available P you have is in the sweet spot in terms of its availability to the plant. Doesn't look over fed, so perhaps just a little bump in nutrients will even out your P issues. Good luck.
 
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