BE CAREFUL! I also use little giant pumps, but, you need to make sure you get the right one. If it's submersible, it's probably the wrong one to get. Little Giant has a line of freshwater pumps that have very attractive prices, but have a lot of steel on them, therefore, they rust and fall apart, and leech stuff into your water. These are pond pumps, and not meant for your saltwater tank! It might be priced attractively, but don't make the mistake of buying it and using it on your saltwater tank. That said, I have been using one of my Little Giant pumps for over 10 years without any maintenance besides the occasional vacuuming of dog fur and dust off it (about every 5 years) and squirting some oil on it (about every 6 years). Very reliable pumps, and fairly quiet.