Help me diagnose

Hello guys
So my plants are in first week of flowering.
they are 7 plants in soilunder 2x 600hps lamps
I have been feeding them bio grow and started with bloom now. I also give them calmag every 2 weeks. I don’t feed a lot cause soil is rich.
currently soil ppm is Around 1000
ph is 6.4
Temps between 22 and 28
I got a lot of symptoms can anyone help me
Pics below.

please

We need white light pics to diagnose anything

Pics with light off

Could be mag and P def but they look generally underfed. You might try feeding at 6.6 ph next time to help mag and p uptake. Also the first 3 weeks or so of flower they use a lot of nutes stretching and gearing up to flower.

Or she could just be cannibalizing older less useful leaves preparing herself for flower. Especially the fuller bushier ones

Definitely underfed, your soil is used up and need to start feeding more regularlu

93OG said:

Could be mag and P def but they look generally underfed. You might try feeding at 6.6 ph next time to help mag and p uptake. Also the first 3 weeks or so of flower they use a lot of nutes stretching and gearing up to flower.

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I agree with the phosphorus deficiency and overall under-feeding. Plants starting to flower start requiring increased amounts of that P and K.