I got the specs for the pump above, including the performance curve. (let me know if I should post it).
In short, it'll do 4 GPM(240gph) @ 1.74 psi (4 feet), but can only handle 1 psi (2.3 feet) at 5 gpm(300gph). It will however handle 2.80 psi (6 ft) at 1.32 gpm (80gph). It cannot handle more than 2.90 psi (6 feet 8 inches).
I think it's a little underpowered. Connections are 3/4" ID.
5V@ 1.2A = 6 Watts (definitely underpowered).
It could be run in a dually, but there would have to be something to prevent the two outputs from leaking into each other (a flap valve?).
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