It very well could be the water... I know in my past couple cycles I've always started stalling(weight wise) after or around wk 10 as well... My diet is on point this time for sure and I've went up from 175-192-193 holding(although my weight fluctuates due to high metabolism) I'm at end of wk 7 and eating a shit ton and my weight has stopped going up(even after re-evaluating) but my gains are still being made thickness mass and vascularity(very clean bulk this go around... Maybe someone will chime in for us both! Lol (I did add winny in so I know that's cutting bf for sure but not weight) it's getting tougher though...
Edit I did prime from 180 to 175 b4 hand....