> Last time I checked these high powered toilets first suck things down, then fill it up with water. No toilet except those found in airplanes can actually suc

> Last time I checked these high powered toilets first suck things down, then fill it up with water. No toilet except those found in airplanes can actually suck things down without first having water come in from the top. The sucking action is created by water entering the bowl and coming over the top of the trap, and the water exiting down the drain then creates a vacuum that sucks the remaining water down. High-pressure toilets simply create more pressure at the top, they don't do any suction first.