a little concern on the bleach...this was the first year i used bleach as opposed to shock...and it was the same year I had stains on the walls I couldn't get rid of....and had to do the acid wash...still not clear what caused the stains...whether it was the pool company adding alk and CYA at the same time...or me using the "wrong bleach" (I know I bought the unscented plain 6% one)...or lack of closing chemicals...i do have the shock in hand...will add it now...