But it's always nice to see a pig pile on shaped food option.
Here's my powder technique
Dip my tweezers into the tank water. Maybe 1/4-1/2 inch depending on the tank.
Shake off excess water.
Then dip them into the powder of choice.
Light coating of the powder on the tweezers.
Dip them into the tank near some water flow and swirl them around a bit.
This really helps get the powder below the water surface and the flow helps move it through the tank.
I've found just sprinkling on the surface often powder gets wasted within floating plants or the edge of the tank etc.