Ok i've been using this tool to determine if i'm balanced, but have a few questions.
First when i select the selected goal levels for a trouble free pool, SWG, vinyl liner. Nothing is put in the Salt field and TA is 100 which i thought it should be lower and CH is 260 which i thought you don't need any at all.
My pool current measurements are
CYA 50 (could be a little higher since i only added more a couple of days ago)
Now temp 84 CSI is -.31 just out of 'Balance' and Temp 86 is -.29 just in 'Balance'
As the temp drops it goes more out of 'Balance' unless i raise my CH, which i should not have to