Funny thing is two people at PB advise opposite things - One says "Swim in it, don't worry about the chems your weekly guy will sort that out - just brush it twice a day" the other is all about the great equipment that will take care of it for me - aforementioned Ozone Box and the Tabs cranked up. Nobody asked about the CH level at all, they are only even remotely interested in the FC and PH. and when I showed them the other measurements they said "Nobody does all that stuff, just take the sample to Leslies..." So I come to this forum and try to work it all out. Was not going to add the borates for a week or so but might wait - I did not see any thing in the forums about new plaster (We have the pebble stuff) and borates.