Sadly I cannot comment at all on the chemistry equations - I worked for my B in eleventh grade Regents chem all those years ago. However, I am now nervous as I have on occasion poured the bleach around the entire perimeter of the pool with the pump running - especially at opening. I have an 24 gal 18x42 vinyl ig with a 3 ft shallow end. Of late I have been adding the bleach to one of the 2 skimmers (one closest to non-cartridge DE filter). I add 1.46 gallon jug over the course of about 1-2 minutes time.

I won't do the perimeter thing any more - but was that really bad to have done?