Hi I have no idea what has happen to my ak girl 4t...

Hi @Mlhazey, it seems you have a Cal and Mag (Deficiency/Lockout) more than likely, i suggest you water your plant with a ph not higher than 6.4 and not lower than 6,0, what i would do in your situation is, i would water that girl with clean water with some cal-mag and ph a little higher then usual(- because PH of 5,5 is-( (good/best) only for coco and hydroponics) goodluck with your grow i hope this info helped ! 😊

There's a few things happening here . One the PH of your soil is way way way to low . You should raise it to ideal PH levels for soil . Secondly i see CalMg def basses on some of the pictures I see you should be using some to prevent the browing of your leaves as well as stop the yellowing in between the leaves vains . The last thing im noticing is that your plants are very very close to the light this may also cause some problems as the light may burn some of the leaves . I might also suggest switching your nutrients feedings to something a little more bloom oriented . Other then the few minor things your well on your way to getting kick ass medicine ! :D :D I hope this information helps you abit -Happy Growing!

Hello @Mk5hazey. That's a calcium deficiency that more likely came from wrong PH. 5.5 is a bit low. Start watering with a PH around 6.5 ( or don't adjust it at all than adjusting it at 5.5 ) and your problem should be fixed . Also grab your self an EC meter if you are going to continue with these synthetic fertilizers and it would be wise to change the nutrients you are using to nutrients that are not designed for coco. Happy growing ! 👊

You are using coco nutes with soil? Anyway, I see rust spots on upper leaves, which is calcium deficiency. There's also signs of nute burn, bit since I see no information on your feeding strength, I can't comment on it, you may be feeding too much, too often or both and if that's the case the calcium issue it's probably lockout, if this is the case a flush would do good.

Hi on Pic 6 and 7 i see a very clear case of Magnesium defiency. The Leaves look like Brown or Dark Spots Edges Appear Brown or Burnt Mottling / Mosaic Pattern Pale Color Leaves Veins of Leaves Stay Green Yellow Leaves - Lower, older leaves Yellow Leaves - New Growth Yellowing Between Veins. caused by a to low PH. Your PH is to much acid. try to rise the PH to 6-6.5. That is the range where the Plants can absorb the Magnesium. You can use any Calmag-Product . But at first try to fix the PH