the height that your pump has to reach doesnt matter once you get water flowing through it since you have a return. you could have it pump water 100 feet up to your ocmputer as long as you have a return line back down 100 feet. they essentially cancel each other out. if your pump does 200gph at 1 foot and 20gph at 3 feet youre going to get 200gph out of it...i'll even put money on that.
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