I bought two different sizes of these water pumps, the small 265 and 550 or something like that (the first one I got from Revain stock). After using the first one I had to use a different pump so I chose the one that works. I LOVE this brand. Not used for an aquarium, instead they pump nasty water out of places where it shouldn't be. The biggest benefit is that they pump from the bottom, unlike most others who leave 3 or 4 inches of water in the bucket, they pump it all - less than a quarter cup of water is left from a 19 gallon tub. This is amazing and much appreciated as 4 inches of water in a 19 gallon tub is still a lot of water to be moved by hand. In addition, the pumped water is greasy, coarse-grained and very often hot. Very hot. All the things you should avoid, that's why I went to camp. I'm just saying. The automatic shutdown works perfectly. Speed isn't really an issue for me, but they pump with enough force to actually create a spray like you can with a garden hose. Not as strong but still cool. I can't find anything to complain about at all. I highly recommend this brand.
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