I know that this will be one of the easiest project for me to build yet.
Kalkwasser Reactor. Based on this design.
http://barraquatic.com/kalkreactors.htmThe one that I will build, (when I get the money) will be 36" tall.
5" wide.
Hanna Variable Speed Magnetic stirrer.
estimated size recomendage 150 - 500 gallons.
estimated material costs $130.
Esimated labor time 4.5 hours.