This is "1kg of feathers vs 1kg of stone"

The weight of the ball is irrelevant if you have just enough pressure to lift it. When you add MORE weight to the marble ball, you will get the spray effect.

From what I understand, the water would spray out if it could, but there's not enough room, so the force instead pushes the ball up to give more room, but the engineer tailored the forces just right so that once the ball is lifted, the force that would have made the water spray out is already used up, so it doesn't spray. There's only enough force to spray or lift, not both.

Imagine a trickle of water. A heavy marble ball might construct it and force it to spray out, but a foam ball of the same size would not be heavy enough, and the water would push it up and out of the way.

So if your marble ball is forcing the water to spray out, increase the flow of water from a trickle up to whatever it needs to be for the water to lift the marble instead of spraying out.

(Is that right?)