The EcoPlus 1083 gph submersible pump is a good size for running 3 low pressure aeroponic totes or even a cloner.
EcoPlus 1083 GPH Submersible Pump Reliable And Inexpensive
Eco pumps are inexpensive and reliable. They are bulletproof as long as you don’t run them dry. This pump runs at 0.276 psi and has a 9 foot lift. It only draws 70 watts or .64 amps so it’s economical to use. The mag drive motor has only one moving part and can handle off and on cycles well. It is silent too. It comes with barbed fittings for 1/2 and 3/4 inch tubing and has a sponge filter to help keep your misters from getting clogged. It has a suction cup mounting to keep it in place. It is submersible but it can be used as an inline pump too.