Cal def or what?

[namvet25]

SOIL; promix ,NUTES;GO BOX, PH;6.3.Only thing I can think of is calmag def or nuteburn but the plants are 90 days old and are flowering great.I havn't changed anything so this is kind of a mystery to me.

 

[Muddy]

At 90 days they are probably just finishing up. I wouldn't be too concerned about it.