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Message: [QUOTE="MariaTeresa, post: 264936"] I'm assuming that I'd get either the same or more waterfall flow as the 500gph I had been using. I can't see how a 1000gph pump could possibly do less. I'm looking at the TetraPond 1000gph (70 watts) and the Jebao 1000gph (85 watts). I was looking at the Danner 950 because they sell replacement impellers....but then I got to thinking that if the impellers break so often that they sell replacements maybe I don't want that one! The Jebao has 600gph at 5ft lift, and the TetraPond doesn't say (but TetraPond does have a 3 yr warranty!). It is hard when you read reviews on amazon that a pump only lasted a month for one person but 6 years for another! If these pumps use less than 100watts does that mean that their energy consumption won't cost anymore than leaving a 100watt lightbulb on 24/7? [/QUOTE]