Chlorine and pH problems following missing stabilizer

[Cstaines]

I just received the K2006 pool test kit. We are ready to follow the next instructions.

[PoolDoc]

Watch the videos, here:

http://pool9.net/tk-guide/
http://pool9.net/tk-interfere/

Notice particularly the TA interference video. Then:

1. Test the chlorine levels, using the 10 ml sample and the 0.5 ppm/drop test.
2. Mix 1/4 cup of pool water with 1/2 cup of tap water. Test for CYA. Multiply the result x3
3. Report those results, including FC (free chlorine) and CC (combined chlorine) Tell us what you water looks and smells like (if there's an odor).

4. Make sure you have a gallon of distilled water from Walmart on hand. Mix 1/4 cup of pool water with 1/2 cup of DISTILLED water. Test the pH of this sample. The result is as tested; no multiplier.
5. Test TA, adapting for high chlorine.
6. Test CH
7. Report those results. Tell us what you water looks and smells like (if there's an odor).

[Cstaines]

Alright, just tested everything.

Water is clear with a very faint chlorine smell
Free chlorine 10.5 ppm
Combined chlorine 1.5 ppm
Cyanuric acid 300 ppm
pH 7.6
Alkalinity 320 ppm
Calcium Hardness 220 ppm

[PoolDoc]

Use muriatic acid to lower your pH to near 7.0, and just keep it there.
http://pool9.net/ma/

If you can aerate, that will not only help lower the TA, but will help remove some of the combined chlorine compounds that are forming.

Also, you need to add 6 gallon doses of PLAIN 8% bleach, each evening. With CYA = 300 ppm, a *normal* chlorine level is 15 ppm; 'shock' is 30 ppm or more. You'll need to get the chlorine level up above 20 ppm. Be sure to use the 10ml test sample with the K2006 (each drop = 0.5 ppm). Otherwise you'll use up your chlorine test drops too fast.

[Watermom]

You might hold the record for the highest CYA award. I can't remember another pool that we have had on here recently with a CYA level that high! Thank you, pool store!!

[Cstaines]

That sounds good. A question though, if the chlorine is well above 20 ppm in the evening, will we still have to add the 6 gallons of bleach that day?

[PoolDoc]

How much more chlorine you'll need to add, depends entirely on how much partially degraded CYA goo is left.

You can run a chlorine demand test to find you, if you like: http://pool9.net/bucket-demand/