dry tips and spotting. deficincy/nuit lockout?

over the last couple days ive noticed my leaves drying out and yellowing im at 5 weeks in veg my medium is ffof and started running roots organics at the 3rd week at half strengh. ph been around 6.2-6.5 any advice on whats going on might be heat stress it happend after i went from a t5 to a ufo led full spectrum and had it about 6" away but now have it at a good 12" away now 2 feet away. thanks agian guys.

I find in general that 6.2 in soil/soiless causes lockout. I try to keep it at 6.5...that's just my two cents.
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sweet thanks for the great info brother. oh and its only the top half doing this.

Ilovebush said:

I find in general that 6.2 in soil/soiless causes lockout. I try to keep it at 6.5...that's just my two cents.
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6.2 isnt going to cause major issues esp in soil. Are you providing micronutrients like Ca, Mg, S, Fe etc? A lot of fertilizer contains only macronutrients (NPK) and if using water with a low ppm, you may start to develop deficiencies in the micros esp Ca and Mg.