Soooo. I actually jumped to x2 on my nuts. (week1 1/2 str. week2 full str. and week3 x2 str.) i use heavily filtered water(not ro) and found my last autos had deficienies alot and i found a little yellowing of the single finger leaves on a few so i doubled up. i think the twisted leaves are low humidity or genetics im not overyly concered seeing as how shell be flwring soon and im ok with 30% rh is what it is. oh and my lights are only on 75% till they flwr then ill try 100%.