Yeah, with CYA (stabilizer, cyanuric acid) > greater than 200 ppm, 10 ppm wouldn't begin to be enough to clear your algae. And, as long as you didn't get high enough to kill it, you'd just end up using the chlorine up.

So . . . since you have a concrete pool and are (presumably) in a dry area where the pool won't float out of the ground, draining and refilling might be the best bet. You could fix things up as they are, but you'd end up running chemical levels outside the range of most test kits, and that would make things complicated and confusing.

Once you restart, let's figure out how to avoid getting your stabilizer so high! You also might want to post test results on your FILL water, so you can get the start up chemistry right.

Good luck,

PoolDoc