Question for the old farts

[DanConnor]

Back in the 1970s there used to be a powerhead that really moved a lot of water; odd thing was you had to keep the top part above water... I think maybe it was fan cooled. Anyone remember what it was called?

 

[mfinn]

I remember it, but just can't picture the name.
I think it was Supreme something?

 

[DanConnor]

No, but I just remembered! Gemini powerhead.