2nd opinion hit em hard w P or calmag em?

Full info:
Week 6 of flower - gorilla glue #4 - in
Fox farms ocean forest,
Adv nutes perfect sensi A & B along with Big bud - all nutes are given at 1/2 to 3/4 strength * never full strength.
PH at 6.6 to 6.9
Plant's are in 8x4 tent multi strains SCROG
w/2 1000w HPS temps controlled well avg 79° lights on and never dip below 65° lights off.

This is bugging the hell out of me!
So whats your experience tell you by looking at the shades?

Starts out with the purplish tint,
Followed by yellowing and nasty browning and death.... its not seen on the buds only fans, and yes I see a slowing down on growth.

Are we looking at a phosphorus deficiency? They need more P?

Or is this a cal/mag need ?

Your best educated guess would be welcomed... as in like now, its week six and i want to eradicate this problem
Suggestions please
Flush? or hit em hard with Calmag or P?

Rastfar-I said:

Full info:
Week 6 of flower - gorilla glue #4 - in
Fox farms ocean forest,
Adv nutes perfect sensi A & B along with Big bud - all nutes are given at 1/2 to 3/4 strength * never full strength.
PH at 6.6 to 6.9
Plant's are in 8x4 tent multi strains SCROG
w/2 1000w HPS temps controlled well avg 79° lights on and never dip below 65° lights off.

This is bugging the hell out of me!
So whats your experience tell you by looking at the shades?

Starts out with the purplish tint,
Followed by yellowing and nasty browning and death.... its not seen on the buds only fans, and yes I see a slowing down on growth.

Are we looking at a phosphorus deficiency? They need more P?

Or is this a cal/mag need ?

Your best educated guess would be welcomed... as in like now, its week six and i want to eradicate this problem
Suggestions please
Flush? or hit em hard with Calmag or P?View attachment 4139155 View attachment 4139158 View attachment 4139159

Click to expand...

P/Mg def. Maybe Calcium, too.