This pump is so loud! I read reviews saying it’s quiet, or hardly noticeable, but I can hear it clearly over my tv- and it’s not even in the same room as I am.
Unfortunately I can’t keep it, the noise alone will drive me mad.

I love the single outlet aquarium co-op air pump. I have a dB meter and it came out around 45 dB as advertised. It is easily overpowered for my 4 containers. They are between .75 gallons and 3 gallons. I have it running on the lowest setting. In my experience it's a little loud but I don't care, I sleep better. I had to put it in a pickle jar to dampen the noise for my partner. They said it was unbelievably loud. Jarring the pump solved the issue.

Super quiet and incredibly powerful for it’s
Size.
Easy to operate.

I have four of these pumps. One wasn’t working like it used to for my White Cloud Minnow tank and egg hatchery. I had a back-up that I use for my BBS hatchery, so I swapped it out to make repairs. Aquarium CO-OP stands behind their products 100%, so they sent me a repair kit(and if that wouldn’t work for me they offered to replace the pump.) I really wanted to keep the old pump going, but the repair kit wasn’t enough to get the pump working. They offered to send me a new pump to get me going after my attempts to repair the old one failed. Nothing but LOVE ❤️ from me for this company and their outstanding service. Everything fails at some point but if you use Aquarium CO-OP they will be there too help you, and not run away from the problem. Thanks guys! You have a great company and staff Cory!

Thank you, Cory. The relief I feel is immense.

Our power has been out for (currently) 40 hours. (NW Indiana had some tornadoes come through on June 11, 2026, and power is, of course, getting repaired as fast as they can). I have 3 ACO dual air pumps, each connected to an elevated ACO smallish sponge filter. I have one each on an overstocked 65 gallon cichlid tank, as well as a 75 and 55 gallon overstocked, but heavily planted, tanks. I keep the pumps running despite the canister filters on each tank, because power outages aren’t planned, right?

The night the power went out, I didn’t panic, because I knew your pumps would take over. And they did. Big time. Every single fish has survived. No one is gasping for air. They’re all in chill, sleepy mode.

I also have a single outlet ACO air pump that was fully charged, and I use that to supply the tanks on a rotating basis as I recharge the dual ones for each tank.

My fish will be fine, because I trust you, your products, and I planned ahead for emergencies. Real world experience of 40 hours (and counting).

Thank you. I’ll see you in Lexington, to buy more!

We love shopping at Aquarium co-op. It's a bit far from our home but it's worth the drive. They have friendly and knowledgeable staff and a great selection.

Using this to power a bubble curtain and an ACO medium sponge filter on a 35 gallon. Using it on second lowest setting.

Bought all of my filtration supplies, plants and plant supplies from Aquarium Co-Op and everything has been amazing! I bought the dual pump so I could use it for both my main tank and my quarantine tank and it works like a dream! Could not recommend more and the information and instructions that comes with every item makes buying from them so nice for a beginner hobbyist like myself.

Did not work !...Bought two of the biggest air pumps/ four air tube kits, for my 225 Galon tank, no air came out on any of the tubes. ...You can connect 2 airlines per pump....Pump is running on back up mode, however the pump does not produce airflow.

Video shows the pump operating at the lowest power setting! It isn't silent but it's actually quieter than the hang-on-back it replaced. We get frequent blackouts, so it's good to know this pump has battery back-up.

I love the fact that I got this for two main reasons. 1. It’s very quiet and 2. If there is a power outage then the battery would back it up meaning that my beta fish will still receive the bubbles in his tank. 💯 recommend. I paired it up with the soft sponge filter.

The AQ Co-op brand are fabulous. Life savers for fish. Peace of mind for us wet pet people.

Was using the aquarium co op 40g sponge filter in my 20 long and had TWO tetra pumps to power it! The flow was so slow, but with the dual aquarium co op pump and cutting the larger sponge filter in half to use on two filters I’m shocked at how great and even the flow is with both filters and I didn’t have to mess around with air tube splitters or anything! I also love how you can turn the filter on and off with a button instead of unplugging it and you can adjust the strength of the air!

I’ve owned my single line air pump for a twenty gallon long aquarium since December and have had three power outages that didn’t last more than fifteen minutes and I was home for all three and the pump didn’t miss a beat. Plus it’s super quiet. I’m starting a seven gallon rimless aquarium the middle of July after vacation and I’ve already purchased a second pump for it. Highly recommend these pumps.

This is definitely a well made tough Air Pump. Easy to use, great battery back up. The Dual is powerful, you can set it however much Air Pressure you want. That said, it’s a hummer. In a tank cabinet below sitting on foam pad with small wash cloth over it and drawer shut, you cannot hear it at all. This is a definite bargain for the price! Aquarium Co op has top of the line products, packaged well, fast shipping, the best customer service!! Thanks, JAMES

This pump is perfect for my 5 gallon Betta tank. I have it set on the lowest level and my plants and betta aren't blown around the tank. In fact, Cowboy likes playing in the water flow from the ACO sponge filter.

Have a dual and single outlet. Super quiet! Video is of the dual (the single is just as quiet). Currently connected to two sponge filters (nano and medium) in my 29gal. The single outlet is also connected to two sponge filters with no issues.

Note: my first dual started to be loud after a bit. No points were knocked off because the warranty claim process was painless. I sent a video and the order number and the new pump was in the mail the next business day. Thank you Sarina and Candi!

But it’s not so quiet. My HOB is quieter than this. It is nice but I’ll probably use this for my hospital or quartine tank and look for a quiet airpump

I’ll admit it’s not the quietest air pump I’ve ever had, but I love the battery backup feature. Recently purchased for another setup (not done yet) but got to use it today with a several hour power outage to help temporarily get air to another tank. Great little pump.

I have the both the single out put and the double.
They are very quiet and better quality than any I have bought from local pet stores.
That goes for everything I have purchased from Aquarium Co-Op.
Prices are great, shipping is always super fast and the packaging is very well done.

The water in my tank always seemed murky with the filter that came with my Marineland aquarium. I finally decided to upgrade to this brand after stumbling upon a YouTube video. My tank is now crystal clear…I am beyond thrilled (if this is even possible) with this purchase! Every fish keeper should own this filter✨

This is a great, quiet product for your fish tanks. While personally use this product sparingly since I have a larger fish room which requires a larger air pump. However, I have used this product for smaller fry tanks and as an air pump for summer tubs outside (housed inside a waterproof box). I found this product to be quiet and works as expected. I am especially impressed with the battery backup features and Power Save mode (cycles on and off every 15 seconds). These are a great insurance policy in case of a power outage! Highly recommend!