I've been eagerly awaiting to see if you get an answer from anyone here. I asked almost the same exact question just on a smaller scale after I joined a week ago. I submitted it in the construction and projects category titled "Need Waterfall Pump Advice" 86 views and 1 welcome so far. I've been looking at pumps online but don't want to buy the wrong one and would love to get an American made decent pump if possible. Please....any expert advice out there would be appreciated.
Good luck RUMBLON