Sudden brown spots all over plant in week 5 flower

Ph between 6.0 and 6.5 (using indicator solution because my ph pen broke so exact ph is hard to tell)

Fox farms ocean forest soil and blue planet nutes. I have only been giving water and calmag for the past week or two since the leaf tips showed signs of burn.

I will include a link below on another thread i had made where alot of my grow is documented to provide more info if needed.

Dump some cal mag on it

Onextremebuzz said:

Dump some cal mag on it

Click to expand...

Its given calmag with every watering.

Onextremebuzz said:

Dump some cal mag on it

Click to expand...

Don't get me wrong i am not ruling that out. I am a newb but Id be real suprised if it needs more. It gets lots.

Tell us about your media, feeding schedule/amounts/ppms/ph? Something you are doing could be causing a lockout, never know unless you provide all the info.

Miscalibrated ph pen?

Rurumo said:

Tell us about your media, feeding schedule/amounts/ppms/ph? Something you are doing could be causing a lockout, never know unless you provide all the info.

Click to expand...

For veg they were fed according to Blue Planets label with every watering. I don't check PPMs (lazy i know). I do have a TDS meter though i should start using it.

The link i provided above documents everthing pretty well. It started off just me looking for advice and morphed into a journal or sorts.

Media is FFOF Soil. I

Onextremebuzz said:

Miscalibrated ph pen?

Click to expand...

Mine started acting up so i have been using General Hydroponics indicator solution. I tested the runoff and it seems to be between 6.0 and 6.5 which is consistent with the ph i water with.

The tips of the leaves were burned a for a week or so and slowly progressing before this began. I am not sure if this is related.

Is it possible too much salt build up (which resulted in a burn) is locking out nutes? I never really flushed, i just switched to calmag and. Phd water