Thanks for the replies. I am not using the powdered chlorine. I am using the hth Trichlor tabs. Will probably continue until the CYA gets into range. After that . . . who knows. Give it away to a friend who uses them in his pool. Although I feel kind of guilty about that. He is a "7 tab every other day" guy plus pH+, pH-, algaecide and clarifier once a week, with the 2 way test kit. Not really open to suggestions as he is convinced that's the way to do it. I figure if it works for him, I'll just let him be. If he asks, I'll certainly tell him about TFP.
Just ordered the TF100 test kit so soon I will know what the CYA level is.
Ordering the test kit was easier when I put it into perspective.
Pool $250
3 yds of sand delivered plus ground cloth $192
Bender board, stakes, etc for pad frame $100
Assorted chemicals ??? don't know. Wife picked them up at Walmart and I didn't see the receipt
Test kit $68 pretty cheap insurance
Oh . . . and to continue in the VISA commercial pattern . . .
Having sparkling water that is
safe for my kids to swim in . . . PRICELESS
Dave