I would add a massive dose (1,000,000ppm) of POP....Pool owner patience. Clearing an algae issue may happen overnight but, more likely, will take a few days (from the time you reached breakpoint.....8 hours ago)

The important thing to remember is .....stay the course. Don't let your Cl drift down until your water is clear. You're running your pump 24/7 and backwashing as necessary, aren't you?