I'm curious if anyone has ever put in a bubbler in 9" deep water (i.e. tanning ledge). If so, is it effective? How high can you get the water to shoot up above the surface? If I need to, I can valve it such that it will be the only line running off of an Intelliflo VS pump, which is the main pool return pump. Am I wasting my time trying to add a bubbler in 9" deep water?