Please help before I lose my plant!

[DirtyDan]

Grand Daddy Purp, still in 24 hours of light, pH is 6.5, LED light, cash crop 5.0 grow box, it has these white spots on the leaves and I'm worried. Any thoughts ?

 

[UrbZ]

You said ph of 6.5. Is that in our out?

 

[DirtyDan]

6.5 in, I was thinking maybe magnesium deficiency ? What do you think ? Should I get some cal mag

 

[UrbZ]

Thats what I was thinking too. If you havent been adding it I would. Also check your runoff pH next watering could be do to incorrect root zone pH. Little young to be showing that severe of deficiency.