fluid mixing inside a water block

[MisterE2]

So, I've been messing around with a hybrid water block-heat pipe design for a few months. I'm just crossing out possibilites for fun with a sla printer and a miniscule budget. Anyway, I want to experiment with adding more mixing to some prototypes, and I have no idea what a submersible motor looks like that would fit inside the space between the heat pipes and fins I want to use. Any ideas?

 

[LittleInch]

Drawing? Sketch? Dimensions?

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Also: If you get a response it's polite to respond to it.

 

[MisterE2]

eh, actually nevermind, nothing inexpensive exists that i can shove into a waterblock without everything being exposed to anodic/cathodic reactions from the copper, back to using pumps