Look for an empty water jug which spawns randomly through the zone. Confirmed spawn on first floor side corridors from waterfall room, or by the central fountain. Also spawns at ( 39, 29, -15 ) /waypoint 39, 28.5, -15.
Kill 6 menacing droplets (floating water elemental blobs on 1st floor) to fill the vessel. Sinister fluidities, on the second floor, do not count.
Return to vase ( 2, 0, -43 ) /waypoint 2, 0, -43 on first floor and pour water into it. You are now on a timer to reach the next urn. Redo this step if you fail the countdown.