My experience with baffles is that they need to be close together and have a good amount of flow through them to kill the bubbles.
My problem right now with my ASM is to fit it where I wanted it, I had to turn the pump vertical so it sucks water down and them pushes it horizontal into the chamber - normally it's pulling horizantal and then pushing the water up and over into the chamber.
It seems to work best when I restrict the water flow, if I don't block it, it fulls the collection cup with water, very strange. - any suggestions as well?