When things started looking strange on my plants, I commented in Man O Green and he confirmed my suspicion that I gave my plants too much cal-mag, particularly since I wasn't adding other amendments to put the nutrients in balance
. You could always throw a pic into the infirmary and see what people think if you are concerned about it.
Separately, I think I saw that you are going to switch to DWC next round? I'll be interested to learn more about the setup and how it works out. My tent kit came with a 6 pot ebb & flow system, but wanted to run a few soil grows first before trying out something completely new to me.