Hi, where would i put the expression $NPT*10 to increase my splash particles?
Thanks

If you're using the newer FLIP fluid method to build your simulation, you might have more flexibility by adjusting volume motion and collision settings. Extending each particle's lifespan could also provide more opportunity for more dramatic splashing.

http://www.sidefx.com/docs/houdini12.5/dyno/liquids [sidefx.com]

Thanks for the help, im following the Waterfall tutorial and have some great results. I also have another problem of having incredibly long render times for the splash particles with motion blur! It is over 2 hours a frame for only 11mil particles with motion blur, and without it is quick. I don't know how to optimize any more than I have already. I set the motion factor up a lot and raytrace ect is at 2, doesnt seem to help much, any ideas?!

render the splash as a separate pass without motion blur and cheat the motion blur in Nuke or After Effect

this example may help:
http://www.sidefx.com/docs/houdini12.5/examples/nodes/out/ifd/MotionVector [sidefx.com]