I use it for pumping out the water turtles terrarium and was surprised at how fast that goes with this pump. I have to buy me new hose connections, to really make the whole even as close as possible and even without water splash on the carpet. And it works. The pump and the couplings are tight and letting the water right out of the window into the garden. Small impurities make the pump from anything. To suck any debris or larger particles, I keep a small metal screen in front of the tube end during suctioning. Super, fast, clean. Now we can only hope that the long part also remains tight and works so well.