I have sort of a funky little corner in my yard that used to be dominated by a cedar tree. The huge ice storm we had in January took out that tree. Between the tree and the fact that the funky little corner didn't get good coverage from my sprinkler system, grass has always struggled in this area. I took out the tree in February. About 6 weeks ago, I killed all the existing grass (what little there was). A couple of weeks ago, I remodeled the zone, adding MP Rotators to the funky little corner. Now I am just about ready to sow seed. Zoysia seed likes to be moist all the time while germinating. The problem is, the funky little corner is only half the zone. The other half is well established lawn that is adequately covered by 3 PGP's. I am afraid that if I run the zone a few times a day for a few minutes (like the seed wants), I will be over-watering the other half of the zone. I came up with the idea of changing out the PGP's for i20's -- which can be shut completely off. 1) Will shutting off the i20 for extended periods (instead of just for an adjustment) damage the head in any way? 2) Or should I just quit worrying about over-watering the established section for the 3 or 4 weeks it will take the seed to germinate?