After 1 year of mulling it over with my wife, she finally consented to let me build an AP system outside in northern california.  I'm just starting the planning phase, but the rough plan would be to have a fish tank (a large feed bin) that is 400-600 gallons and I would build grow beds on top (wood with pond liner).  probably some for of hydroton or gravel in the bed with worms.  separate tank t…