I just got a Sicce Syncra 5 pump. I saw one running at my LFS
and did not here a thing. These are new so there is not a lot of info out there. they can be used as external or submersible pumps and are adjustable. the 5 series can be adjusted from 1321 GPH
(0 head) to 713 GPH
(0 head). I will let you know how it goes if I get it running tomorrow.