I use the 182 oz jug from WalMart, it's 6% and I think sells for about $2.54.
What you're using may be just fine, but I would look for an 800 number on the label and call the company to see the percentage of sodium hypochlorite (chlorine). Sometimes they can be as low as 3%. The 10.5% stuff would be a great deal if it is still 10.5 %.....but it depends on how they store it and how often they rotate stock. Higher percentages of bleach tend to degrade faster than the lower concentrations. Somewhere around here, there's a post containing a method for actually testing your bleach for percentage, I'll see if I can find it.

Edit: This thread may help you out... http://www.poolforum.com/pf2/archive...hp/t-7035.html


Janet