This is another one of those questions that seems simple but as soon as Graham and Ashkahn start explaining a few things, you realize that there’s a lot of complicated information in the background. A “SSBASAGAASEAFTYRTTALOCIITB”, if you will. 
The guys take this opportunity to deep dive on the complex conversation of chlorine and why it’s problematic for the float industry, along with several  caveats of the benefits and usefulness of it as a disinfectant.