Help Trying to render bubbly foam

[Barliesque]

I'm working on creating an effect where sudsy white foam pours down from the ceiling to the floor.  Here's a look at what I've got so far:



It's pretty close to what I'm after, but there are a couple of things yet I need to be able to control:  

1. The total number of particles per emitter seems to be restricted to 1000, making it problematic for the foam to pour down continuously rather than in bursts.  
   
2. I'd also like to be able to adjust the shininess of the liquid renderer.  The Obi Fluid Renderer doesn't seem to do anything--I can remove it entirely, and everything stays the same.