First time I walked into the pool store for a water reading and explained I would be doing the BBB method, the OWNER gave me a looooong speech in which he said and I quote "I not only own this store and been in business for 13 years but I have a minor in chemistry" and then launched into all the reasons why I should not try to take care of this "very big investment" on my own since "there are people who make their living FT doing this!" Twenty minutes later:

When he gave me my Cl reading and I asked if that was FC, he said "no it's TC, we don't test for anything else; you don't need to know that in Miami."

When I asked what my Ch was - again "that's not important right now, you just need chlorine and acid"

"don't let your pool get above or below a 2-3 Cl level - it will dry out your skin"

Finally - when he tried to sell me chlorine in tablets but I said I would rather take it in liquid form (yes I caved! , he ACTUALLY said "you realize those are 2 1/2 gallon jugs - they'll be very heavy for you to carry."

Those were just the highlights I could remember after my head stopped spinning.....