CloudDriver wrote:
Buy a clear 90 degree elbow and connect it to the tank outlet. Connect the hose to the elbow and run it out through the side opening through which you took the picture.
IMO that is the cleanest and least intrusive option. In general I don't like making irreversible mods to something that I might not have forever. This would also eliminate messing with dealing with something from underneath.
If your set on going thru the floor use the clear extension mentioned in another post and then simply hook up you hose from underneath since you now have to snake something thru the floor anyway.
Larry