Pawfly Aquarium Battery Air Pump 40 GPH Oxygen Pump for 5 to 30 Gallon Fish Tank Portable Aerator Pump for Outdoor Fishing and Fish Transportation, Battery Not Included (Accessories Inside The Pump)

Bought to use in a power outage, which happened here today. Pleased to say this air pump works really well, although it is VERY noisy. Not an issue for me as I don't have any of my aquariums in any bedrooms. Have bought a couple more, for the same reason, for my other tanks. Update: Yet another power cut. This one lasting 36 hours and I can confirm that this air pump is amazing. The batteries lasted the whole time and I was able to set one up so it worked on three tanks at the same time. Another covered two. Great product to have as a back up. Would highly recommend.

Exceeded my expectations. Works well for a short term thing in smaller tanks. Love my bubbler. Very powerful.

Works really well. We’ve lost power a couple of times and this came handy for our saltwater tank with corals. I guess the battery life is pretty good so far, haven’t had to replace yet. Priced fairly well. The noise level is what you would expect from these battery operated air pump which doesn’t bother me. Highly recommended.

I recently purchased this bubbler, and I couldn't be happier with its performance. In a real test of endurance, it ran continuously for over 55 hours, and the results were astounding. I needed to keep a dozen shrimp alive in a 5-gallon bucket, and this little device proved to be a true lifesaver. Pros: Exceptional durability: The fact that it ran non-stop for more than two days without any hiccups speaks volumes about its build quality. Efficient oxygenation: My shrimp were as lively as ever, thanks to the steady supply of oxygen provided by this bubbler. Easy to use: Setting it up was a breeze, and it worked flawlessly from the get-go. Compact design: It doesn't take up much space, making it ideal for smaller containers like my 5-gallon bucket. If you're looking for a reliable bubbler to ensure the well-being of your aquatic pets, this is the one to go for. It passed a critical test with flying colors, and I have no doubt it will continue to perform admirably. Highly recommended

Great little product! Purchased for our little goldfish pond. Came the day after ordering, well packaged and simple set up. When you take it out of the box, everything you need is located in the battery compartment - Nice thick but malleable air pipe and a little air stone. The air stone produces loads of little bubbles and my two little fish seems to enjoy it. Not silent but not really loud. Really good value for money. So far I've ordered two - Will be ordering again. Highly recommend.