A really cheap easy aeroponics can be built with a large rubbermaid container and a square of PVC 3/4" around the upper midsection inside of it thats hooked up to a pump and an outside tube with a valve for draining. You can put in a funnel on top for adding whatever you need and a clear tube going from the bottom to the top would be a level indicator.

Drill holes in the PVC square with small bits many places to get your desired spray and put it on a cycle timer. Its also good because leaks dont matter so much since its all self contained. Also it can be a DWC also just put lots of air stones in the bottom...then O2 will be great.