Bleach doesn't burn people. In very high concentration (> 50,000 ppm) it will remove the top layer of skin eventually. But, I've encountered commercial kiddie pools where the chemicals were mishandled, and very high chlorine levels were accidentally maintained . . . and no one even noticed. In one case, a high use infant swim pool was used for nearly a week with levels of 100 - 200 ppm, but no burns, no red skin, and no complaints. (I did drain and refill the pool, to correct the problem once I discovered it.)

Read the Best Guess chart, linked in my signature, for a more complete explanation . . . and so you'll understand why you may NEED to maintain those high FC levels till ALL the algae is gone. Then, go order a K2006 kit from Amazon (link also in my signature) so you can actually measure your pool levels accurately.

Good luck!