I have been following your progress because I am having the same problem with my pool. Right now it's green after adding shock to it.

Here is what I did: I shocked it last week and the same thing happened, then the chlorine disappeared. The pool was only slightly cloudy, so I thought I was making progress. Then I added 3 bags of shock to the pool last night and now it's green and murky.

I have been brushing and vacuuming daily, because the pool has lots of fine debris in the bottom.

The pool is a 12.500 gal above ground pool. I have a pitiful test kit (ph and cl only) and I can see now that I need to buy a better test kit.

I think I will try the bleach method after I get my pH down. It is above 8.2. I just added 2 cups of muriatic acid and will test in about 2 hrs.

Any suggestions anybody?