Ok so this is a work in progress with alot of issues.  First, is there a way to really make the cylinder of water have and extreme bumpiness?  Like pouring water or is the best way just to cute chunks out of it using negative rocks?  Also does the splash at the bottom look real?  Or is there something else I could do better.  Any suggestions on lighting.  Im thinking a 1 or 2 color background with a backlight to shine through everything... any other suggestions?