The EcoPlus 1638 gph submersible pump is a good size for running 4 or more low pressure aeroponic totes.
This EcoPlus 1638 GPH Submersible Pump Is Thirsty
At the 27 gpm intake you will want to make sure your reservoir is large enough it doesn’t get pumped dry. Remember it can take time for all the water to return to the reservoir and it is bad to run a pump dry.
Eco pumps are inexpensive and reliable. They are bulletproof as long as you don’t run them dry. This pump runs at 0.513 psi and has a 13 foot lift. It draws 130 watts or 1.18 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.