Having passed my OCLT (FINALLY) I'm prepared to head up to Mustard Shock level. I'll get this done by 9AM today. My issue now is I expect heavy rain/thunderstorms to roll in later tonight around 11PM - 1AM. If I carry my Mustard Shock level through to this event, will it mess me up if I get a real dumper? Should I shock a little OVER mustard algae in case it rains really good? I'm worried about the high chlorine level and my liner.