For anyone else looking to them, some excerpts from one of their articles sums them up nicely. They said it WAY better than I ever could :
'To find out, we did some digging, and we talked to chemists and others who know way more than we do about water. Our first expert–Richard Falk–in no uncertain terms
obliterated the validity of the CH: TA ratio. It was actually so much of a stomp down it was funny to read...'
'You might find it odd to publish a concept that has no chemistry validity whatsoever, but we think it's fantastic.'
Balance water easier with a favorable ratio of ideal calcium hardness to total alkalinity (CH: TA). Experience shows us a minimum of 3:1 improves pool chemistry
blog.orendatech.com