 To get rid of the black streaks, the algae, the fungus and everything. You want to do it when there's not a lot of evaporation. Lightly cloud, you know, a lightly clouded day, a coolish day in the morning. We'll get some, you know, you know, some cool weather, of course, even in the summertime. That's when it's ideal. You can do it in the summertime with bright, sunny and the hot and all that. There's no limitations there.