We're getting some significant rain and I'm looking at having to drain some water out of the pool this evening. I haven't backwashed in a while and the pressure isn't super high but it's high enough that I figure I might as well take this opportunity to backwash rather than just wasting the water. I'll probably be doing it in the rain. However.. adding DE to the skimmer is going to be a bit awkward in the rain, while holding an umbrella in one hand. Is it dangerous to run the filter after backwashing without adding DE right away? Or should I make sure it stays off until I can add DE? I usually let it run overnight.