18,400 gallon pool. I added some bleach to shock the pool (green algae just starting to grow on floor of pool), however I added too much. I just checked the free chlorine and it was at 30ppm (should be around 16-20 for shocking). CC is 0.5, and CYA is around 47. It's supposed to be very hot and sunny for the next couple of days. Will the free chlorine lower on it's own, or should I lower it with chemicals? Thanks!!!!