Stems and Stalk Are Turning Purple, Help! Pics Included

I have absolutely NO idea how the idea of Ca deficiency came into play here! :wtf:

Purple petioles and stems are signs of Sulfur deficiency, low temps, or even simply related to the strain.

You need a better fertilizer either way. The MG you are using isn't appropriate for any cannabis life stage, and your dosage rates are no good anyway.

You also need to check the pH of your soil runoff to eliminate lockout.

Without a better pic that shows more of the plant, plus info on your growing conditions (look in the sticky!!!) all this is just guessing.

how far away are your lights

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You need a better fertilizer either way. The MG you are using isn't appropriate for any cannabis life stage

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I found this ferts 24-8-16 Miracle Grow to be the best thing Ive ever used for the vegatative cycle, it contains all the micro & macro nutes , the high nitrogen content is primarilly urea based (organic form of nitrogen) which makes it almost difficult to burn plants (with the strength I use, 2 LEVEL teaspoons per gallon of water) I feed every other watering and balance the PH of the ferts solution, I expect to see a 1/2 inch a day growth using this

you dont want to use 24-8-16 Miracle Grow if you grow in a confined area :D

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Originally Posted by Ganja Guerrilla

you dont want to use 24-8-16 Miracle Grow if you grow in a confined area :D

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why?

lol he's implying that the growth would be so fast your plant would out grow your confined space :-p