No. I'm not saying that it will be there EVERY time. When I did the Colonix, I only saw a couple of ropes during the entire duration of the cleanse, and I would dig around in the toilet trying to find some. I'm sure there are alot of factors, depending on how much water you drank, and other foods that you eat.
Obviously, if you take the Colonix fiber and then eat ALOT of food, the ratio of food:psyllium sitting in your colon will be larger, thus it's less likely that the psyllium will produce the ropes. But if you don't eat much and the only thing that is in your intestines is water and psyllium/Colonix, then yea, you're most likely gonna see a rope when you have a BM.
At the same time, if you drink too much water, then the mucilage will be watered down and less effective. This is most likely why Dr Natura specifically calls for eight 8oz. glasses of water. In your case, you doubled the dosage, so you had more psyllium sitting in your colon, so yes it would be more likely that a rope will form.