This summer we've been seeing a number of pools with your condition. I think, given the high CC level and 0 CYA level that your CYA got converted to Ammonia compounds. It's going to take a lot of shocking with bleach or Liquid Chlorine to get it clear.

LUCKILY, with your pool, if you want to over-shock it (go above the recommended shock level) it won't hurt your pool at all. Those shock levels are the minimum levels and are safe for vinyl pools.

So if you want to blast your water 'way up into higher chlorine levels, it may clear it up faster. I THINK you need 7ppm of FC for every 1 of CC and that would mean a level of 31...I'm not certain. It should help.
However, two things I am certain of:
at that level of chlorine you shouldn't swim,
and it won't damage your pool.

If you can buy reusable carboys of 5 gallons of 12.5% liquid chlorine that can be easier to handle...one container is equal to 10 gallons of 6% bleach and then you return it like a deposit bottle. But if you do, be sure to get the spigot that goes on the carboy...makes life much easier.

Carl