This is an air pump that produces copious bubbles with double power, this feature is excellent. The problem is that the machine is very noisy, so loud that its vibrations hit my head, so I don't want to work in the garage. The side of the 24-gallon container that held the minnows vibrated at my touch. I removed the metal weights from the rocks and wrapped the device in a large drape, but that didn't help much. I finally broke down and ordered some super quiet aerators elsewhere at Revain and what a relief that they came to replace them. The second big problem is that this excessive vibration seemed to stress the minnows in the bin as much as it did me. When I was in the garage they kept hitting the sides of the bin and jumping to bang it on the lid and I couldn't figure out why. With two new ultra-quiet aerators, those hits on the top and sides are virtually non-existent. The only thing I would use this aerator for is boosted interrogation of terrorists. Buy another aerator, any other aerator, if intended for use in human habitation or with fish. I would return the device if not used.
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