Pawfly Aquarium Air Pump 2.5 L/min Battery Powered Oxygen Pump for 20-120 L Fish Tanks, Portable Silent Aerator Pump with Metal Back Clip for Outdoor Fishing Power Outage (D Battery not Included)

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.

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.

The title would lead you to think it was a self contained unit but it’s not. I run mine on rechargeable NiMH 10000 mAh batteries. They last at least two and a half days on a full charge. I little more noisy than advertised but not overly intrusive. On the whole a good buy for emergency use at home or travel where you need aeration.

Great mobile pump. Very happy with it.

Noise level is loud, not super quiet as it says on the box. Bulky design and big. Rather powerful and functions well, just really noisy, not ideal for someone with sensory sensitivity.

The media could not be loaded. This product says silent. It's that noisy you can hear on a different level of the house. Very disappointed. If you intend to be anywhere near your fish tank with this in use wear earplugs.

Not silent at all don’t expect to have this in your bedroom tank it’s soo loud and definitely not silent at all it has good power to it with the air flow but It is very loud

I entered some goldfish into a show. I needed to ensure that they had an oxygen supply during transportation. The air pump worked extremely well during both journeys and i would recommend it to other fish keepers.