plant diagnosis

[Abdultj]

hey guys, please help identify this issue before it spread
plant details;
Badazz OG sativa
week 4 in veg
growing in coco-perlite
feeding
masterblend 4-18-36
calmag
silica

 

[growsince79]

There are starving for nitrogen and phosphorus is part of the problem. Probably trace elements locked out from high ph

 

[Abdultj]

There are starving for nitrogen and phosphorus is part of the problem. Probably trace elements locked out from high ph

they are 3 plants, others are doing fine, and i check and ph balance my feed every time plus i also feed calcium nitrate which is 15-0-0 so i dought the nitrogen deficiency

 

[growsince79]

they are 3 plants, others are doing fine, and i check and ph balance my feed every time plus i also feed calcium nitrate which is 15-0-0 so i dought the nitrogen deficiency

What brand is the cal? never heard of 15-0-0 Plant looks hungry though.