I'm looking at these and notice there is no center hole for a elbow/barb connection like some of the other false bottoms. Am I to assume the way these work is the stand holds up the false bottom which holds up all the grain thereby letting the water strain through, then all I would do is just drain the water from the MLT through the spigot/ball valve. No need to connect any tubing from the false bottom to the ball valve like other false bottoms? thanks