i have posted my results and i agree about pool stores and samples. my results was higher ph than pool store got, mine is 7.8. i did as aylad suggested, a day later but i did begin it....i stopped after the second gallon being added as the water began to get more cloudy while adding the bleach...so i stopped and posted the question if that is normal and should i continue on the shock to 20??? this morning, the pool is cloudy, can see the bottom, but is more cloudy than before adding the bleach... i'm hoping to get advise if that's is normal and just keep on with the bleach???????