I'd leave it where it is and take some readings first. See if you have a thermocline in your deepest area they can retreat to. If you dont have a thermocline, then you can adjust run schedule and duration accordingly.
.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!