Quote Originally Posted by faithfulfrank
Hello all,
My friend at work believes that all he needs is an OTO tester to check his chlorine. He says that when he puts the five drops in the yellow side, the color you first get is his Free chlorine, and after a few minutes, the color you get is your total chlorine. If there is a big difference, you have combined chlorine, and should shock.
While in Home Depot a couple of weeks ago, I saw that the test kit they were selling said exactly that. Is it accurate, I doubt it. Is it accurate over 5 ppm? No Way. I would even go further to say that if you compared his test to yours (assuming your testing with FAS-DPD) yours would be more accurate every time. As Carl said, he probably won't believe you any way. His loss.

Quote Originally Posted by Carl D
I don't understand either why people won't spend less that $100 on a good test kit after having spent $20,000, $50,000, or $150,000 on their pool and landscaping.
Excellent point! You'd think a $100 investment to protect this HUGE investment they made is going to break the bank. I guess it can be attributed to the fact that most people want something for nothing...

Dave