Thanks BoDarville. I am not following the pool store method or the TFP method, I guess you'd call it the "lovlilynne" method I just want to get water tested at pool store (for free) to see if they come up with same # - or even similar - to what I've been getting with strips. I know that the strips aren't very accurate, but it doesn't really matter to me, I've cleaned my pool despite inaccuracy. I'm sharing my experience because someone else may have the same situation, and I can show that there are alternative approaches.