The pool is a 30,000 gal IG. The chlorine was still somewhat elevated from opening shock, probably around 3 - 5 ppm. Last night at 11:00 I added 5 gallons of bleach. I didn't check but that should have raised the level to by 10 up to 15 or so. I haven't yet checked it this morning. We have another party today at 2:00. The poo poo event in question happenned last night at 7:00. Is it safe to swim or am I going to have to set up the volleyball net for entertainment?