just a quick update on what I've been up to for the last days. Got some physics going for the stomach acid at last :-) So now when your cells fall in they create waves and splashes instead of just sinking down without effecting the acid at all. I used this tutorial to get it to work. So a big thanks to Michael Hoffman for posting it up!!
I uploaded a quick little video to youtube showing the effects in action:
That's it for this post anyways. As always thanks for reading :-)