Zacro Aquarium Air Pump - Ultra Silent Oxygen Pump with Dual Outlet Adjustable Air Valve, Air Volume 2 * 5L/min 6 W, Up to 130 Gallon Tank

My 7 year old air pump in my 200 litre aquarium recently gave up the ghost. It was still making the monotonous sound it's been making for all those years, but virtually no air was arriving in to the tank, so it was time to look for a new one.From personal experience, I don't believe the claims of "ultra silent" or similar on air pumps. My definition of silent and those of the manufacturers of them differ greatly. Something I can hear from the other end of the living room over the sound of the TV is not silent. As such I took the Zacro's claim with a pinch of salt. What drew me to it, though, was the dual outlet. On my old setup I had a single outlet and a single non-return valve (NRV) which then had a splitter and two pipelines heading into my tank. It worked but it wasn't pretty. I thought I'd give this product a punt, even though it was one of the more expensive ones available on Amazon.The pump is a solid beast. It's a heavy lump and it feels reassuringly well built. And I can testify how well built it is because I wasn't in when it was delivered, but watched in awe from my home security cameras as the delivery driver "handed it to resident" by dropping it over my 6ft side gate into a puddle. I wouldn't have held it against the Zacro if it was totally destroyed, but fair play to it it took the beating and kept on going.Installation is straightforward. It comes with 2 metres of pipeline, 2 airstones and 2 NRVs which will get you feeding air to your tank in no time. My one criticism of the whole package would be that the pipeline was a bit short. 2 metres isn't really very much, when you consider that's for two airstones which are likely to be at opposite ends of your tank. A pump like this is really only going to be on a decent sized tank, and likely to be housed in the cabinet underneath, so have a think about it and work out if 2 metres is really enough for you. I suspect not. I needed more than twice that. There's a dial on the top which will allow you to control the flow of air to set to your preferred intensity.When I switched it on for the first time I was expecting quite a noise given the size of it, but I was pleasantly suprised. It's not silent, not in anyway, shape or form, but it is the quietest pump I've used. It had four pointed rubber feet that do a good job of prevent vibrations turning your tank into a big subwoofer, and the sound is kept to a tolerable minimum. You can hear it easily enough through a closed cabinet door, but it is an acceptable level. Just don't be upset that it doesn't meet the "ultra silent" claim. None of them do.Overall, I'm very happy with my purchase. It's been in the tank now for nearly a month and has performed flawlessly.

Great pump, really quiet on the lower setting and pretty good wide open. Good price for what appears to be a good quality item and quick delivery.

Had this running a couple of months now and all good. Was very easy to set up and the air flow is good, giving lots of bubbles through 2 large flat air stones. Claiming it is “ultra silent” is a bit much (hence 4 rather than 5 stars) but it is the quietest of 4 pumps I’ve had. The aquarium is right by my desk where I work from home and the sound doesn’t disturb me at all. Overall I’d say it’s very good value for money.

The media could not be loaded. I bought this item due to the metal parts theoretically lasting longer and the comments on noise. I was so pleasantly surprised - this air pump is big, but it's fantastic. It's quieter than my old eheim, and running at low strength (still more than enough for my 100L) it's quieter than the fridge. In the video attached, you can hear the fridge not the filter, and I'm right up against the tank. I have it hooked up to an air stone and a matten filter and it's absolutely perfect. I don't normally leave reviews, but I am so happy with this purchase. I will update if/when it dies, or needs repair work.

This model is the Zap6, noted on the box and looks to be the midrange of three. It looks huge against my 25ltr tank. My usb air pump, the one that looks like a large D battery kept dying and reviving. I didn't trust it anymore. So I opted for this. If I had seen a Zap5, maybe it would be more suitable for my aquarium size.This air pump has 2 air outlets which eliminates using connectors and comes with 2 air stones, 2 check valves, a 2m tube and easy to follow instructions. In the image, it's the black box by the home made coconut oil tub aquarium for the baby fish 🐟 🐠 and the 25ltr aquarium.Although it has a control knob to limit or increase air flow, I still used air limiters to control the air to my aquariums as one needs more air than the other.It does the job and my fish are finding the extra air stone bubbles exciting.

Really quiet almost silent considering the size. I bought this for a my 70 liter fish tank and i definitely recommend

Good item

Powerful and quite