Please help!, 2 month (green crack feminized)burnt leaves or nutrients burn ?!

[Jointsmoker]

Hey everyone, I’m fairly new to growing this is my second grow first attempt didn’t make it out of the seedlings phase. I thought I was doing pretty well I didn’t give it any nutrients at first.
Because the soil (big rootz) that I’ve been using claims to have enough to bring me to harvest.
I defoliated my plant 1 month into veg and recently did it 2 days ago I planed on doing it before flipping light cycles because of large foliage blocking light, second time around I really cleaned up the bottom and took off large fan leaves, the first time I didn’t get any stunted growth. But 2 days after the second defoliation it stopped drinking at the rate it had been and I started experiencing the burn/ browning yellowing in the pictures. 2 days after I started seeing these discolorations I added a mix big bloom and grow big from fox farms at 1/2 the recommended dosage. It has been drinking it but slowly. If anyone could help me out here I really don’t want to lose her thank you

Light- areo light by VIVOSUN 150watts / on/off 18-6 about a foot away ,vegetation spectrum

Rh - constant 60rh

Feeding- ph 6.2 top feed mist occasionally bottom self feeding pot mainly used

All pictures today

[DanB]

Are you getting any runoff numbers hard to say what’s really going on without them.

Now older fan leaves will start to die as the plant gets older.

Just reread your using bottom feed what’s your rate of feed or is it gravity wick feed?

I’m also going to tag someone I trust and believe uses some variation of feeding style as you

@Bentstick I know you were talking about auto pots, not sure if this is the same thing or not but thought of you on this.

[Bentstick]

Yes autopots, not familar with the nutes, lights seem set a little strong for this stage, mine are run about 650ish and turned up 50 ppfd every week until flower and at 6-5 weeks out from finish I start going the other way and start lowering ppfd as far as bottom feeding once started dont stop, I do not folier spray… Will reread more of your postings and see if anything triggers any red flags.

[OGIncognito]

Bump the PH up to 6.5 Grow Bro, looks like this plant is experiencing a phosphorus deficiency and commonly accompanied by a calcium deficiency. These 2 could be and often PH related as in out of range. Soil PH range is 6.3-6.8