Comments: Used this to transfer my two clown fish, fire shrimp, coral and live rock in a five gallon bucket. Worked great!

Comments: I use it when I go fishing in a 5 gallon bucket to keep pan fish alive on the way home.

Comments: I have not used this product. It's sitting in my closet for when power goes out. We've recently had lots of bad weather in Dallas, TX. But I tried it out and works. Hopefully it works for long time periods. seems like a good product though.

Comments: Fortunately I have not had the occasion to use this product. At the time of purchase we had a scare from a Hurricane, just felt it was time to add the product my inventory.

Comments: For the size, portability, and cost, this fit the bill of what I needed and has worked well since purchase, no problems noted to date.

Comments: Good product for the little money it costs. Was confused when I first received it. The battery compartment is labeled 'AA', but it requires 2 'D' batteries.
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Comments: The Azoo produces 2.4 times as much volume as the Hagen Marina, and both run estimated 65 hours on 1 set of batteries. The Hagen Marina appears to have a sturdier construction and larger motor and more readily starts when batteries are weaker and in other conditions. If you want the larger volume of air and cheaper price and do not mind the less sturdy construction, get the Azoo. If you want sturdy construction and do not mind paying a little more and do not mind the reduced volume of air, get the Hagen Marina. I evaluated the Azoo, but did not actually put it to practical use.