I took my water samples to two pool stores today because I am so skeptical of them now. The first one said I had a salt reading of 610 ppm. The second one said level was 1500 ppm. Should I average? Should I go to another pool store? Should I error on the side of the lower one? I would like to share the hilarious conversation I had at pool store #1
me: I would like for you to please test this water for cooper and salt.
her: sure!
I waited 15 minutes while she talked on the phone and told a customer that copper makes chorine not work at all in a pool and it was a waste of time and money to add any more chlorine when there is copper in the water.
her: no copper in MY water!
I waited a bit longer for the salt results to come back. While I did this, I witnessed a complaining customer who said that she dumped in the stuff they requested and it started to look better, but now it is cloudy and green again today. The pool store girl said, "you just have to keep adding more bags of shock. At the same time, another store girl was telling a man that he had high copper and suggested he use different pucks.

I felt bad for everyone.
FINALLY, the girl came back with the salt info.
her: OMG, you need like a ton of salt
me: oh goodness, I don't care to know how much salt i need, just how much I have in the water now.
her: oh, I don't know how to test for that, the computer just tells me how much pounds for you to buy.
me: how about you figure out how to get my starting point and I'll handle the pound conversion
her: you can't do that. you won't know how
me: Then I looked at her computer paper and noticed that it said 610 ppm salt
her: oh, I never noticed it that before.
I smiled and left
THANKS TFP!! You made my day!!
Now, back to my original question. Which number should go with?