I have a new 15k gallon pool with a smart chlorine generator - CL is good, pH was a 7.8 so I added a little bit of muriatic acid; however the TA is coming back at 50ppm. How can I get it in the 80-100ppm range?
You are not going to be able to follow TFPC methods with a Poolmaster 5-way test kit. It does not test CYA which is essential for knowing your required FC level to target. And it cannot test for FC over 5 which is often needed.