Ok here I am again. I searched online and couldn't find anything definitive. I've been committed to doing BBB method but started wondering if all the bleach will add up to be a ton of $ in the end. Pool store sells Cal-Hypo at $83 for 25 pounds. She said that would last the rest of the season, through pool closing and possibly opening again next year. Concentrated bleach here runs $3 a gallon.
I understand I'm asking for some math here. If you tell me how to calculate it I'd be happy to do them myself. I'm a little lost in that area after reading some posts online with all kinds of calculations regarding available chlorine, etc. Or if you could post a link to a thread where someone has broken this down. I found one but it was based on 6% bleach at $1 a gallon.
(BTW, our current CH is 50 which is why I'm considering Cal-Hypo for the rest of this season at least...but not sure which is better or cheaper)