Mr.Shenanagins
Member
This is the original Bean Animal Overflow guide from the creators website. It has recently disappeared from the web when you go to older links so here is the updated link for anyone who is considering a sump setup.
https://web.archive.org/web/20190103181834/http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx
https://web.archive.org/web/20190103181834/http://www.beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system.aspx