You need to keep adding bleach to the pool in order to kill off the algae--if you stop now, you'll have wasted the time and bleach that you've put in over the last few days!!. In the meantime, go ahead and add some CYA (follow label directions for about a 20 ppm dose for your size pool) into an old tube sock and suspend it in front of one of your returns so it can begin dissolving. It can take a few days for it to completely dissolve, so don't bother to test for it again for at least 4 days. If you'll give the sock a squeeze occasionally, it will help dissolve it faster. Eventually you'll begin to see your chlorine demand go down--both with the killing of the algae and the presence of the CYA, but for the next few days you'll need to keep adding it frequently to continue your battle with the algae. Make sure that one of your doses is at night after the sun is off the pool--that way the chlorine will just be working on the gunk in your pool and not lost to sunlight.

Janet