Thanks swimdaddy! It has not been a good summer so far (look at my recent posts!!!) My pump is also having issues and I don't trust it running 8 days unsupervised. I've also had a windy storm blow leaves / twigs / debris into pool and if that happens while away the skimmer would definitely fill and then low flow into pump equals disaster! Will take my chances with the chemistry and possibly get new pump upon return. As for polyquat, how/when do I dispense? 1 day prior to shut down and allow to filter or after shut down across still water? Thanks!