Rena Air 100 Air Pump

This pump is extremely loud. The small unit is quieter. I returned it.

Pros1) Decent price2) QuietCons1) Mine quit working after 3 months, you can barely feel air pumping out, but it's not enough to even get through the tube and form one bubble.2) Rebuild kit costs half as much as the original unit.

We bought two Renas over 5 years ago. They are whisper quiet and still working. We have more fish tanks (of course!) so I ordered two more. Number three Rena sounded like a radio control plane waiting to take off. Not good. It went back in the box. Number four is better than Number three but much louder than Renas 1 and 2. They all work but the sound level seems to be the luck of the draw. Since they all are the same make and model I guess it's poor quality control.

So many pumps claim to be totally silent. This one was supposedly one of the quietest. It is still not silent. IT makes a definite vibrational sound which might be enough to keep someone from sleeping in the same room. I have my bubbles on a timer now to turn on and off automatically so that it's not running when someone is likely to want to get to sleep. I think besides that though, it seems nice and functional and puts out a pretty good amount of air pressure.

I bought this to replace an annoyingly noisy pump, and was completely satisfied. This pump is quiet enough to be located in my living room between my fireplace and tv, and still be quiet enough not to bother anyone. It's a good choice.

Am returning this -- it sounds like a little air compressor. Yes, like a little midget version of the thing that powers my nail gun, air chisel and torque wrench. I could hear it from two rooms away with the door closed! At least my big air compressor turns off sometimes. :-DI took it to PetSmart -- they carry Rena also -- and they agreed that it was broken in some way. Bought a Tetra 40 there and am VERY happy with it.

I've had this pump for roughly two years. It works fine and everything but one day I needed to change the airline and while doing so, the knob that the line slips over broke off at the base! I've pretty much treated this pump with kid gloves for these two years. I use it at room temperature, I don't store it weird with anything putting pressure on the knob, and I don't take off and on the airline frequently. I think the time it broke was maybe the third time I changed the airline. And I wasn't yanking on it either.Therefore, there is no reason for this breaking besides it being of poor workmanship.So I called Rena to see if they'd rectify the matter or if there's even a part that could be purchased to replace it and while the gentleman that I spoke to was very polite, they wouldn't stand behind their product because the short one year warranty was up. He also said that I could purchase a casing (at my expense of course) IF this guy he gave me the number to has any. I didn't even have that option because it was a dead number.So let's review:1. Puts out air fine.2. Knob breaks with regular or less than regular use.3. Manufacturer won't even stand behind product when defect reflects on their own workmanship.My conclusion is that there are many air pumps that will pump air that don't break and will be backed up by the manufacturer when they're at fault. My money is best spent on one of those other brand's air pumps.

Its definitely not quiet, Louder than a whisper anyways. It says its ultra quiet not my definition of ultra quite. For a cheap pump its quiet. But i've owned others that were much quieter and had to pump outlets. The average user will like this. Its just ok. If your looking for something "ultra quiet" spend some real money and get a good pump.Update- I have now owned this for over a month. This thing just keeps getting louder! At first it was bearable now idk i'm looking for something else. I would not buy this again.