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This is a very good pump, and quite quiet (but not quite silent if used inline). If submerged though i'd say this pump would be barely noticeable. I had to rate this as 4 stars however due to the rated and actual flow being fairly different, the 1.5 flows about the same as am eco264 pump (measured 270, rated at 290), when it should be flowing significantly more. It is however much quieter and better built by far!
Well, I guess there is no such thing as a silent aquarium pump. I really had my hopes up with Sicce. This is no different. 60 hz hum is just as annoying as the cheap pump that came with the BioCube 29 I put this in. Now it IS less loud than others but it transmits the vibration through the suction cups of the base. The only fix I know of is isolating it from touching anything with aquarium foam filter material. That made it tolerable and pretty quiet. I'll be keeping it but am not satisfied with the claim of silent operation. Oh, you also need to remove the front and back plastic covers as they fit lose and vibrate if you don't remove them. Everything else with it is good. Good flow for it's size and power consumption. Nice fittings.
I recently purchased a EcoPlus 264 to use as an aquarium gravel cleaner. However, it seemed just a little weak when pumping the water through a 25 ft python water changer tube. I considered the next level up which was the EcoPlus 396. However, I decided to get the Syncra 1.5 since it was supposed to be quiet and similar in power.
Well, the Syncra 1.5 in my opinion is pretty much the same as the EcoPlus 264 despite being rated at a higher output. If you put them side-by-side, they are the same size except that the EcoPlus has a large base for the suction cups. I do think the Syncra is quieter, but only when submerged. When used inline, both have a pretty loud hum.
Another drawback of the Syncra 1.5 is that the suction cups attach more strongly to the surface than it does to the pump itself. If the pump is intended for a permanent installation, that's fine. However, if you are using it like I am to move back and forth between buckets, it's terrible. Pulling the pump out of the bucket is guaranteed to leave all of the suction cups on the bucket instead.
In the end, I decided to return the Syncra and keep the EcoPlus 264. It's way cheaper, comes with a ton of attachments, and just as powerful/weak.
So much noisier than my original pump. I read positive reviews and negative. I thought maybe I will get a luck and get unbelievably quiet pump but got a little louder than my original and on the top of that annoying sound like there is something loosed inside of engine. Maybe I got a lemon, I ordered second one, and same noises. Description states 100% silent is misleading. I didn’t expect it to run totally silent but at least more quiet than original.
It was packed cheaply and carelessly with flat bubble envelopes and box was torn on both of the items even though they were separate orders.
The only good thing about them was a powerful flow, but that doesn’t justify my needs. The noise drives me crazy. I like to run everything nice and neat.
I was torn between the 1.5 and 2.0 model. I bought the 1.5 and ended up returning it for the 2.0. 357gph sounded like enough, but add head pressure and a check valve etc and I wasn't able to meet the rate I desired. It doesn't seem like much different between 1.5 and 2.0 upfront, but the size difference alone is enough to tell you the difference in performance. Either way, both models are dead silent and I would recommend either depending on your use case.
I have a Fluval Flex and have used the 2.0 and 1.5 as a replacement pump for the Fluval pump that came with the tank (the 1.5 is smaller in vertical length to reach the bottom back tank chamber where the 2.0 fits perfect with the pump tubing that came with the tank, however, you can make either work!). The pump flow and suction power is amazing in comparison to the Fluval standard pump. Maybe it’s because of my tank but I have but I also have a Fluval canister running and I can barely hear anything. In addition, I run a hyggar wave maker. I have zero heat issues anymore. Maybe I have some extra barrier with this tank but this pump made a difference with the flow output dramatically. I love Fluval and all their products (I just think the pump that comes with their tanks isn’t their standard quality but more a generic, run of the mill pump which they expect you to upgrade anyways I’m sure). No complaints here! (Side note that I rotate these pumps because I don’t have time in one instant to clean it and put it back in so, I rotate them based on which one I have clean at the time, they run like a champ and no broken ones yet! Also, Fluval did not make a pump compatible size wise for my tank).
I own several other sicce pumps. All are very quiet. The 1.5 is loud. It has a rattle coming from inside. Even holding it in a bucket of water to ensure nothing is touching the pump to cause vibration, it's loud. I contacted sicce for support. After running a slew of tests and sending them pics and a video, they sent me a replacement. The replacement is just as loud as the one I bought here. It has noticeably more flow than my 1.0, but unusable because of the noise. Avoid this model.
Extremely loud! Not sure if this is a defect. I am currently in talks with SICCE customer service to help trouble shoot the problem. This is brand new too! I have to switch it back to the stock coralife pump because it's driving me wife and I crazy!
Aside from being really loud, the performance is really good providing good flow in my Biocube 32 and it's a perfect fit.
Overall I'm impressed. I'm using this in a Biocube 29 as a replacement for a different pump I was using. The previous pump was annoyingly loud, this is not.
For this price point, you're not going to get a silent motor. But, I have this tank in my living room and it's not an issue. Yes, you can hear the motor humming, but it's not 'loud' by any stretch of the imagination. In fact, the overflow is louder than the motor.