tag:blogger.com,1999:blog-9136691209248233009.post8958552189220358195..comments2023-08-31T00:23:12.246-07:00Comments on Bushranger: A win win for the fishBoobookhttp://www.blogger.com/profile/01395043246338753023noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-9136691209248233009.post-52934006889420094952017-07-15T21:12:10.095-07:002017-07-15T21:12:10.095-07:00This has an explanation of one way http://www.brit...This has an explanation of one way http://www.britishdams.org/glossary/fish_lock.htm It seems that the lower section needs to be made water tight, and then it just automatically cycles every few hours.Ken Bushwalkerhttps://www.blogger.com/profile/00356020862476667328noreply@blogger.com