I just drilled a well and it's only producing about 7-8 gal / min. I have adjusted nozels and can run the well for about 10 min at a time. My Nelson Control doesn't allow delay times.......I think. It is a Nelson EZ Pro Jr. I would like to have 20 minutes delay between each zone. Is this possible. The system was put in new in 2006 and is a 12 zone system. I can program 9 different start times but I can't seem to figure out how to program a delay time. Does Nelson do this ? Thanks.