I don't know what the "Brilliance Bromine" system is, but I used bromine on my first fill. I had my floater set about wide open. If you use the tub every day, you will have to add chlorine to the water along with the bromine. More use, more sanitizer. If you use the tub just a few times a week, the bromine tablets in the floater will probably keep up with sanitizing the water. It all depends on use, and don't let your dealer tell you different, because that's how the system works. I used regular clorox bleach to supplement the bromine.