He`s not going to finish 4 plants in a 3gal bucket

If you want a cheap dedicated aeroponic cloner.
1. Grab a cheap planter, rig up a lid and cut a pool noodle into pucks.
2. Hook your mains water supply up to a 12v solenoid,
3. Equip that with a single misting nozzle and control it with a 12v cycle timer.
Run it to waste so every misting uses fresh, cool water.
The one in the pic delivers 75psi to the nozzle and uses about 0.75L of water per day, a tad less than 1.4 us gallons per week.
View attachment 3680097
2 seconds of mist