I am on my 3rd week for Critical kush photoperiod Female & 4th week for my Royal Creamatic autoflower female. A little back ground is I started my seedlings in tap water with ph of 7, using peat pots I used fox farms ocean forest soil. About a week and a half i placed them in 3g pots. They were doing great, I started to feed them at 2 weeks with grow big & big bloom they were doing great by the beginning of the 3rd week my critical kush started to change color leaving brown / yellowish spots and then my leaves became crispy. My royal Creamatic start having brown spots as well. I figured a had a magnesium deficiency so I used one ts on CalMag in 1 1/2 gallon of water no nutrients. I used purified water ph'd at 7 (using drops). Though my runoff was acidic ..below 5! I just set the plant back in my tent hoping the cal mag fixes the issue. this is my first grow I have no clue what I'm doing... Any tips about what I should do from this point fwd?
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