If you read the Best Guess chart I mentioned before, you'll see that a pool with extremely high CYA like yours needs a shock level of 25ppm. So, you can see that when you stated that you have kept your pool at shock level for the past week, you actualy haven't been going high enough.

Each of those jugs will add approximately 2.5ppm of chlorine to your pool. You can use that as a reference to figure out doses of bleach to add while you are trying to clear up the pool.

Three hours or so after you put that dose of Borax in, retest pH and before you add the large doses of bleach. If your pH is not above 7.0. add more Borax. Get your pH above 7 before you shock the pool because the pH test won't give an accurate reading when you chlorine level is as high as you are going to have to take it.

You are going to need to keep your chlorine level at shock level until the following conditions are met: the pool clears, and until you can go from sundown one evening to within one hour of sunrise the next morning without losing more than 1ppm of chlorine and until your CC reading is no higher than 0.5. Then, keep the chlorine at shock level for one more day for good measure and then let it drift down and keep it between 8-15ppm all the time. If you let it drop lower than that, you'll have another algae bloom to deal with. Also, run the pump 24/7 while you are trying to clear the water.

What have you been using as your source of chlorine, by the way? Also, what kind of filter do you have?

Hope this helps.