Thanks, Ben.
I used 32 oz of polyquat last Friday that I paid $30 for at Leslie's. In-The-Swim is about 25 minutes away in West Chicago, IL and they sell quarts of polyquat for $23.00. So yes, I can get more polyquat locally that is cheaper than Leslie's.
Home Depot has 25# bags of DE for $20.00. Should I get some and add 2 cups per day?
Calcium hypochlorite appears in lots of "bag-o'-shock" products. Is that what you mean? If so, I wouldn't know how to chose from one bag to the next. Is there a specific chemical composition that I should look for?
All I have on hand in terms of chemicals are a 50# bucket of 99% dichlor from Sam's Club and a few gallons of 12.5% bleach. I don't plan on adding CYA, borates, or anything else until you tell me to!
Randy