You will love the JBJ! Our clients could not be happier with the units.
here is a pretty good how to video
http://www.youtube.com/watch?v=b2X0I-Zd2vo
and check out these diagrams here
http://www.jbjlighting.com/prod-ato.html mode B. Id rather keep my tank safe then a $20 pump in the resevoir.
Enjoy your unit