Spots on plants leaves, please help, first grow: again, more pics

[Daniack]

40% Sativa, 60% Indica
2 months old
5 gallon pot
600w HID light (about 22 inches[56 cm] from plant top)
Food:
Sensi grow - from advanced nutrients
BIOTONEX DENSO - from CANNABOOM
Growing in soil, feeding about 0,5 gallons (2 liters) of water every 2-3 days

(this ocures only on few leaves)
Last time I get advice from Emilya, that it might be a start of a magnesium deficiency. Can someone cofirm that please? (I trust her, I just want to be sure)

Because of nitrogen toxicity I've been feeding her half the nutriens she is supposed to get for a month now, so I am bit curious what is happening to her.
Overall plant looks good. Bottom leaves are yellowing but I suppose that's normal, because it's proppably caused by not haveing enough light.
Some leaves have claws, but I can't lower the amount of nutriens my plant is getting because I have no other way to balance PH, than my PH perfect nutriens.

 

[bobrown14]

Looks like you may have spilled your nutrient feed onto the plant?? Doesn't look like anything systemic or a pest.

 

[Daniack]

Looks like you may have spilled your nutrient feed onto the plant?? Doesn't look like anything systemic or a pest.

Woah, didn't think of that. Might be it. I am mixing my nutriens close to her, this would explain why is it on only 4 leaves and on one side of the plant. I'll be more carefull mixing nutriens nextime. Thanks!

 

[Herbokolog]

The amounts of nutrients may be more. How your irrigation method

 

[Daniack]

The amounts of nutrients may be more. How your irrigation method

I am using glass to pour the water on the soil, not hiting leaves.

 

[Herbokolog]

Never quench before the soil dries. She may have sweated.

 

[bobrown14]

You can get water on the leaves and its atually good for the plant but not water with nutrients. The lights burn the leaves with fertilizer mixed in.