How can I make a destroyable pressure source? I am okay with pump, But I need swomeething that creates pressure strong enough to "push" the water out of spng. any ideas?

vent kinda isn't destroyable. like pump....

hmm, well i am not a fan of heat, but that could work as it is a desalination plant...

EDIT:

I have discovered that if you touch waterlogged gel to waterlogged spnge, it releases the excess!