So if I am at 6.7/6.8 that means I'm not running to high and I won't get a nutrients lockout?
I'm getting some yellow leaves going on and I don't know if I'm having a nutrients, I give her 900ppm at the moment (she is in week 4 of flower)
I'm using 100 watt (actual wattage, 5x20watt)
Humidity...