Submerge and Fill the Hose

What happens here

Take one end of a garden hose and fully submerge it into the hot tub, ensuring the end is deep enough to remain underwater throughout the draining process. While keeping this end submerged, the hose needs to be filled completely with water to initiate the siphon. The video doesn't explicitly show the filling, but it's crucial for the siphon to work. A common method is to either fully submerge the entire hose first, or attach it to a water source to fill it before quickly submerging one end in the hot tub and the other in the drain area.

Goal: Get one end of the garden hose fully submerged and filled with water in the hot tub.