I just have to guess for you since I have no education in this.
I use Oxypowder for the oxygen 1 capsule between meals and this does not give liquid BM's.
When I use it as a coloncleanse I use 3 capsules at night, that gives me 1 or 2 liquid BM's in the morning before lunch and only one if I don't eat in the morning and then it stops. Since I also don't know when you take your BC, I would say take it away from the Oxypowder . May be at lunchtime if possible or after your BM in the morning.
The Oxypowder creates oxygen in the intestines to liquify the old fecal matter, that is the object. The cleaner your intestines the better/faster your food and pills will be absorbed in your body.