Sicce Syncra SDC 9.0

Great pump. Responsive app. Never crashed. Have had this one and a 6.0 with no issues. I say it is louder than expected, but mostly because I have a dozen sicce syncra silent pumps and they are virtually silent. I expected this pump to be silent but it has a slight sound that can only be heard if everything else is off. Meaning, the sound is really insignificant because there are lots of other things in a reef tank that will cause noise pollution before you have to worry about this. Just buy it! Oh, confession...haven't cleaned any of my pumps.. I just ramp them up and give a good shake in the water and the biofilm flakes shoot out. It works.

This is probably the loudest return pump that I’ve ever owned, for almost $400 to me that’s unacceptable. I have an iPhone and the app is amazing other than that it’s like a car motor under your tank. Check the reviews on R2R.

I purchased the Syncra SDC 9.0 recently and had a few issues, I opened a ticket almost a month ago with Sicce support, still no answers after several attempts.The pump is decent, a bit louder than the one it was replacing.Moves a nice volume of waterPeriodically/randomly changes speeds even though it's set for constant speedHad it not been for the noise and the random speeds, it would be a 5 star pump. Ironically, I opened a ticket about the random speeds but no response from SicceIf they fix the problem, I will update the review to reflect it

Very silent and efficient. The app works greatly. Love it.

It is not quite, it has a rumble kind of like a 5k Diesel generator. I have also not been able to get it to hook up in the app or wifi

A little bit on the pricey side

Upgraded from a Danner MagD 18 and while the Syncra SDC 9 has the ability to move significantly more water it does so while also producing more noise. To be fair, my AC pump was actually very quiet and the Sicce isn't intrusive. Just a different pitch and a little more "mmmm" from it.