SICCE Syncra SDC 9.0 Water Pump 1000-2500 gph WIFI Apex Controllable Aquarium DC Return with Controller | Quiet, Submersible or External | Fish Tank, Sump, Pond, Freshwater and Saltwater Marine Use

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.

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

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 water Periodically/randomly changes speeds even though it's set for constant speed Had 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 Sicce If they fix the problem, I will update the review to reflect it

A little bit on the pricey side

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

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.

My favorite pump brand for the past 10+ years. This one is definitely overkill for my 150g display and 40g sump. I run it around 35%. It's pretty quiet, but you can hear a slight hum when cranked up. Definitely worth having the Wi-Fi capability. The app works fine, nothing fancy and not buggy.