Hydrogush 4000

From the Super Mario Wiki

The Hydrogush 4000 is a big yellow machine that spews water, much like FLUDD. However this machine is bigger, and as such it is capable of producing vast amounts of water. It was invented by Professor E. Gadd in Mario & Luigi: Partners in Time. The professor used it to extinguish the lava caused by the eruption of Thwomp Volcano. At the very end of the game, it is discovered that baby tears can be used to counteract the Shroobs. Professor E. Gadd alters the water's chemical makeup to be the same as the babies' tears. The machine spews water all over the Mushroom Kingdom of the past, ridding it of every trace of the Shroobs.

Professor Elvin Gadd's Inventions
E. Gadd's Garage • E. Gadd's Time Machine • F.L.U.D.D. • Gaddgets • Gaddlight • Game Boy Horror
Game Boy Horror SP • Ghost Portrificationizer • Ghost Gown • Hydrogush 4000 • Magic Paintbrush • Poltergust 3000
Poltergust 4000 • Starbeans Café • Stuffwell • Super Poltergust 3001 • Vacuum Orb