Hi, I'm sure the experts will be along soon with an answer for you, but in the meantime here's some information that will help you along. I just finished the battle of the cloudy water with my pool, and after discovering this forum and the information here it was crystal clear in less than a week.

You are off to a good start, the key is going to be keeping your pool at shock level until the water is completely clear. There are two tools on here that will help you do that. The first is Ben's "best guess" CYA chart. This is in a sticky in the Using Chlorine and Chlorinating Chemicals thread, and it looks like this:

Ben's 'best guess' FC/Stabilizer table for algae free operation of OUTDOOR pools -- as of July 2003 --

Use the info in this chart to help you figure out what levels of chlorine you need to maintain in your pool based on the amount of CYA (cyanuric acid, also called stabilizer) that you have in your pool. (FC = free chlorine)

Stabilizer . . . . . . Min. FC . . . . Max FC . . . 'Shock' FC
=> 0 ppm . . . . . . . 1 ppm . . . . . 3 ppm . . . . 10 ppm
=> 10 - 20 ppm . . . . 2 ppm . . . . . 5 ppm . . . . 12 ppm
=> 30 - 50 ppm . . . . 3 ppm . . . . . 6 ppm . . . . 15 ppm
=> 60 - 90 ppm . . . . 5 ppm . . . . . 10 ppm . . .. 20 ppm
=> 100 - 200 ppm . . . 8 ppm . . . . . 15 ppm . . .. 25 ppm
Since your CYA is 0, Shock for you is a free chlorine (FC) above 10. Test your water at least twice a day (morning and evening) and keep adding bleach to bring it back up to shock each time. When your water is clear and the FC level stays the same overnight, you're ready to let it drop back down.

To determine how much bleach to add to stay at shock levels, download mwsmith's bleach calculator. Here is the link http://home.earthlink.net/~mwsmith70...achCalc262.exe

When you run it, click on more calcs, go to settings in the drop down box, and change unit of measure to Imperial, that will give you the numbers in gallons. Then just input the size of your pool, percentage of the bleach you are using, and the desired ppm increase and it will tell you how much bleach to add.

Those two tools will make keeping a clear pool (along with proper testing) an easy job! Also, if your PH reading is correct, you're going to need to get it up pronto. You can use 20 Mule team Borax to increase your PH. I'm sure the others here in the forum can tell you more about what to do for that.

Good luck!
Don