Thank you!

I have a couple questions about starting BBB. How often do I do the overnight FC loss test?

Also, how exactly should I start the switch? I assume I have to figure out how much chlorine my pool will need a night? My target FC is 3-6 so if I am going to be adding the bleach at night do I add enough to get me to 6 or do I need to add enough to get me higher than that to keep it in range until the next night?