Hi Ben, I will re-test tomorrow and add results. I tested for copper today and had none so will add those results to the chart.

Can you explain to me - Do I need to worry about the copper/Ph thing if I don't seem to have a copper problem?

Also, I am confused about the Frog question - are we both talking about the products from King Tech? A friend of my husband's installed our pool (he's in the installation business but doesn't sell chemicals). He has us using the same things he uses. Every year I insert a new Mineral Reservoir into the Frog but instead of paying an arm & a leg for their Bac Pacs, I just cut the bottom off and fill them with 1" or 3" tri-chlor tabs. What are the side effects you mention? Wouldn't the tri-chlor tabs BE a sanitizer? I apologize if I'm being slow to catch on here, it can be overwhelming. Thanks for your help.