Couldn't find an up/down water elevator. Only two separate ones side by side so I figured out how to make my own.
This one has quite a delay because it goes all the way to the bottom of the world.
The jukebox is so you know the switch was successful, as sometimes both pistons fire at the exact same moment and neither the soulsand or magma block get moved.
Maybe I'll make a how-to video if people like this.















