Sweat Auto Dark Devil Problem

Hello.
This is my first post about MJ and i hope You guys will help me


My Dark Devil is about 34 days old and 1 week into Flowering.

At day 29 i saw problem and don't know what exactly is wrong.
30% Leaves is turning light green . Problem is on top and bottom of the plant.
I'm was using Npk 1,9-0-6,7 + Calcium (i know it isn't good, but in my country isn't anything better)
But at day 27 started using NPK 5-5-6.
Ph is always at 6.5 and i'm watering every 3-4 days.
Using 325W CFL at 18/6.


Could you guys help me and tell me what is wrong and what i can do.

Here are some pictures.

The problem is rising and i don't know what it is..
Maybe it's the manganese or wind burn...
Can you guys help me?View attachment 2999834View attachment 2999836

garaiss,
The middle picture looks a bit like a mg deficiency. That's magnesium. The yellow splotchy patterns all seem to be between leaf veins. Marijuana is a Mg loving plant so it's fairly common. You may be able to find Epsom salts in a local pharmacy and add a bit to each liter of nutrient mix. A common dosage is 5cc (one teaspoon) per gallon so that would be just over 1cc/liter.
JD

Thank you!!

Hello again. Here is new pictures of this problem -


It is still MG deficit or it's MN?
Can you guys help me, because it's 3rd week in flower and don't want any trouble.

get a spritzer bottle and mix epsom salt and water until it dissolves then spray the leaf till it is drenched wait an hour then spritz it again with plain water to clean off the excess salt.