New Grower Nitrogen Deficiency?

[DJ High]

Medium...coco/petite 60/40
RH...52
Temp...75
Strain... LSD25 auto
Container... 3 gallon fabric pots
Grow Space... 2 x 4 x 5 grow tent
Light... 800w cob LED actual wattage 215
Feed...Remo MagNifaCal 4ml/g
Micro 3ml/g
Grow 3ml/g
PH....6.0
PPM...650
Feed amount... 1l
Plant age...33 days from breaking ground

Hey can anybody here verify if this is a magnesium deficiency? There are a few small copper colored spots on two lower fan leaves. I'm into pre-flower and 32 days since breaking soil. (still stretching so no bloom nutes yet). BTW this is an LSD25 auto. This pick is from last night and has spread to another leaf this morning.

Assuming this IS nitrogen related last night is did a foliar spray of 1 tsp of epson salt per/g. I also upped the MagNifiCal (Remo Nutes) by 2ml/g and just did a manual root feeding.

Is this all I can do or is there anything else I should do? Kinda desperate.

 

[namvet25]

What are the percentage of Cal and Mag in your magnifical?

 

[DJ High]

@namvet25

• 2% cal
• 1.3% mag
• 1% iron
• 3% nit

BTW thanks for the help