Kids!

Did you add 2 gallons? Or 2 jugs? A gallon is 128 oz and we were shooting for 126 oz. You'll have a goodly amount of chlorine to kill whatever might need killing. If you have the chance to take another water sample to the pool store for testing let's see what the pH is. Some pH tests fail when the FC is over 10 ppm. I'm not entirely comfortable recommending how much washing soda to add until we have a reliable pH number.