[youtube width=”670″ height=”400″]http://www.youtube.com/watch?v=ubMfB9TpeE0&feature=sub[/youtube] The HPP-600 water pump from Polish AquaEl is an unusual inline water pump with the potential to fill some unique roles. At 22 watts, the AquaEl HPP-600 can pump a maximum height of four meters (13 feet)…