Thing is, the nutrient levels are supposed to drop every day... And if they are not dropping, that means that the plants are locked out.
I think that is what they are talking about when they are saying that the system is stagnant right now... there is really nowhere to go, as .3 is the maximum EC that one is supposed to be at in veg.
One should start out at .2 or so, with just a trace of nutrients and a trace of Cal/Mag.
I just checked my notes on my last grow, and I was at 150 PPM on the 700 scale, which is about 2.2 EC.
3 weeks later I was at 180 PPM. .. every day it would drop 10 or 20 PPM, and I would raise it back up to where it was the day before.