Step 39: What It Can and Can't Do.
So to recap on what this thing can do, here's an example of what it can and can't pick up.
When it comes to the Aqua Culture pump on it's own, rated for 40-60 gallons, the stuff in the upper right of the image, it probably wouldn't be able to lift. But the stuff in the lower left it has no problem with.
But if you want it for beading or maybe things like small resistors and LEDs, this should do the job. and for less than half the price of a commercial electric vacuum pen.