Pawfly Aquarium Air Pump, 40 GPH Fish Tank Air Pump for 5-30 Gallon Tanks，Black & White

Worked great for a cross country move, kept my shrimp happy with a working air stone for the drive. Used my wall powered one at night in the hotels, ran this during the day. Only had to change the batteries once in 3 days. A little noisy but not bad, just threw a towel over it to muffle it a bit.

I used this product for my mad scientist halloween display. It was worth the money and did it's purpose. After halloween I placed it in ma aquarium where I run it a couple of minutes every other day. It's sturdy, durable, easy to use. Battery lasts long enough, it's pretty quiet with pretty decent airflow.

I have four tanks. When we lost power for four days during the last blizzard I chose to use this pump on my largest tank. It saved a lot of fish. I will definitely be prepared next winter by ordering more of these pumps. Well worth the investment.

Worked moving our fish from Michigan to Texas. Just had to change out batteries. Quiet. I mean. When in a car, you can’t hear it. Hotel room, yes. Yet sounds relaxing. Battery life is good.

If I could give this 20 stars, I would. I bought this almost 2 years ago as a backup in case our power went out. Living in WI, we have some pretty wicked storms sometimes. This past Friday, I had to use it because my a/c went out. It was 95 degrees in my home and I knew my goldfish wouldn't be able to handle the hot water. I got out the pump, put in the batteries and put it in my 20 gal tank. My a/c was replaced the next day. The fish likes the bubbles, it's been 5 days and it's still going strong with the same batteries. It's a little noisy but it's doable. Don't hesitate to purchase this....so worth it!!

It works very well but it’s so loud that it scares my dog, so I can’t really use it lol.

Great little bubbler! I particularly like that it uses D batteries. I run it twice a day for a tank with a dozen small freshwater minnows and they enjoy their “oxygen therapy” sessions. I did have to weigh it down with a rock because it kept floating to the top and I wanted the bubbles to come from the bottom. Problem solved.

Works perfect! Pump creates lots of bubbles keeping my bait alive and feisty

This is value for money. A bit noisy but I still like it

Exactly what I needed and has saved me from a few power outages

Works as described

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.

Keep them mice out of the engine yes it works great no more mice in the. Engine tk chew my truck wires .