Yes, the return pump is shut down for feeding twice a day and the restarts itself ~20 minutes later.
http://www.beananimal.com/projects/5...ing-timer.aspx
Where should the discharge go? That is kind of up to you. The skimmer should not be fed more water than it is designed to handle. On the other hand a high flow sump is not really ideal with regard to processing all of the water through the skimmer. I am also a proponent of high flow refugia and do not see any advantage in low flow refugia.