Not sure about that the stems are very woody and all the GG4 I have seen are typically green...idkI wouldn't worry about that... its a trait, I think. lol
Mine is really bad thoughcheck star crash pix
https://www.icmag.com/ic/album.php?albumid=69927&pictureid=1666722
legit gg4 stem often turns to purple or red.
Mine is really bad though
You right Dan,that plant wish to grow directly on Mg nutes..
even Fake GG#4 x SB keeped that trait and they are very hungry for Magnesium
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Agree Dans,
SB is for Sour Bubble,actually on that trey is one Sour Bubble pure and shes not
much different than others,only maybe have shorter and a bit rounder leafes..
and also already hungry for Mg,this plant are all good eaters of nutes..
progeny of this plants shows hunger very fast,turbo nute eaters..
Need to made them green again,better tunning with nutes..
Okay I added 3 ml/gal of calimagic this rez change. The last rez had only 1 ml/gal I wanted to see how they would react. As far as the epsom foliar should I just keep doing it while using calimagic? Seems to have zero effect but I'm not sure how soon I should notice a difference.purple stems are a phospherous deficiency , it happens more in coco than other mediums because of the cation balance . add some calmag to your mix or boost it a little more if your already using it . the extra calcium will benefit the cation balance & the extra mag will make the GG4 happier because its such a Mag hog .