Hi guys, just wondering if people have advice on what sized pump I will need to pump water 10 meters or so, to do easy water changes. I have a bad back so I want to pump the water from the tank to the bath drain and back from a bucket in the bath for water changes. I will use a python for cleaning the gravel but not for water changes. Also, I believe I need a magnetic impeller so the motor doesn't burn out if the pump accidentally runs dry, any suggestions on the best pump would be appreciated.