Hi Bobcat and welcome to the forum. What is the volume of your pool? We really need some good testing numbers to be able to help. I'm assuming that your chlorine tester only goes to either 3 or 5. It is a good idea to invest in a good kit. We like the Taylor K-2006. It will pay for itself in no time.

I have a feeling that your CYA is probably high from using the trichlor pucks and it has also dropped your pH. If your pH is still showing 6.8, go ahead and add another box of Borax. It may be much lower than 6.8 since that is as low as the tester will read. From another post written by one of our members who sells Taylor reagent refills, he states that when doing the TA test, if the indicator turns immediately red (as opposed to green) then the pH is less than or equal to 4.5. After you add the Borax, wait 2 or 3 hours and then retest. If the pH is still low, add more Borax.

You need to get the pH up ASAP! Repost with a full set of numbers. You may (until you get a better test kit) have to have it tested at a pool store, but just don't let them talk you into buying anything.

BTW -- Thanks for becoming a subscriber and supporting the forum. Also, instead of starting a new thread, just reply to this one so we can keep all your info in one place. (I merged your two threads.)