Pool Water Turned Green After Adding Shock

[tdoss]

I've been a fan of poolsolution for years but now find myself in need of assistance.

Somehow my levels got out of whack...so I added chlorine bleach like always but it wasn't responding. My wife went to a pool store and then bought a crazy amount of shock and the pool became crazy green now and my test kit ran out of certain tests...so I bought a new test kit (Taylor K-2006) and I've tested everything that I can.

I'm not sure where to start so I'll post every test I found and hopefully someone can direct me where to begin.

Free Chlorine is present
Free Chlorine is .7
Combined Chlorine is .3
PH is 8.0+ (or higher...can't tell)
Muriatic Acid test says 5-6 drops
Alkalinity is at 90ppm
Calcium Hardness is 350ppm
CYA...this one I'm not sure...I believe higher than 100. I tested for it and the spot disappeared before I could get the solution to the 100 line or "lower"...so I assume it's over 100.


My pool is an inground pool. It's 30' x 13' rectangle. It's a "volleyball" pool...where both ends are around 4' deep and the middle is 5' deep. I estimate my total volume to be around 13,100 gallons. I have a 2hp Hayward pump. I have a Sta-Rite filter system. I have "The Pool Cleaner" pool cleaner. My filter runs 5 hours per day during midday. It's roughly 90+ degrees here in Southern California, Riverside County.

Please help. I know I should be able to help myself but I've read and been on this site for years and have been using liquid bleach, borax, baking soda and muriatic acid for years from your suggestions but I'm overwhelmed on this one and am not sure what I need to do first and how to proceed.

Any advice would be greatly appreciated.

[PoolDoc]

You need to read this: http://www.poolforum.com/pf2/showthread.php?9755

Your privilege status when I update your membership is dependent on that info . . . but we also need your Pool Chart info.

Meanwhile, retest your CYA, after diluting 2:1 with distilled water ($1 for 1gal jug at Walmart). Mix 1/4 cup pool water with 1/2 cup distilled; test; multiply x 3.

And . . . READ the Best Guess page linked in my signature . . . and then dump the 4 gallons of plain 6% bleach you ALSO got at Walmart into your pool

Finally, read the muriatic acid guide linked in my signature, and tomorrow, start adjust the pH with muriatic acid. Take your pH below 7.5 before you stop.

Plan on 4 gallons bleach each evening for at least the next 4 days. BRUSH the heck out of the pool after the 2nd evening dose.

[Watermom]

What are the ingredients of the shock your wife bought? How much of it did you add? Before this, had you only been using bleach? I'm trying to understand how your CYA got so high.

Welcome to the Pool Forum, by the way!

[PoolDoc]

just entered your pool chart data and updated your membership - - you probably want to run your filter 24/7, till you get your water cleaned up.

[tdoss]

Thanks for updating my pool chart. I read the "getting started thread" and thought I should make the chart first, then post. I tried entering that before I started a thread and I guess it doesn't work that way.

I have no idea what was in that shock. I don't know why my CYA is so high...I've NEVER added cyanuric acid (unless it was through shock inadvertently). I bought my first bottle of cyanuric acid granules from Home Depot two days ago just in case I need it.

I tested my CYA again using my K-2006 kit. I bought some distilled water but I didn't understand how I should test it by multiplying drops by 3. The test kit I have says to mix 7ml of pool water...add one of the ingredients...I think r0013 until it hits 14ml mark.

Then...mix that up for 30 seconds. Then add that to the smaller test tube until you can't see the little black dot at the bottom. I did it twice and both times it disappeared before it hit the 100 mark on the little tube. As the tube fills up...the number goes down...to something like 30. Am I using the right tube? Am I doing this test properly? I have no idea how I'd use distilled water and count any drops. Oh wait...would I mix as you suggested...then dropped drip by drip until spot disappears and then multiply by 3?

The bleach I'm using is L.A.'s Totally Awesome Bleach...but I just noticed that my jugs have 96oz. So...I'll increase it to make up that difference.

Here's the new test results after 4 gallons of bleach per day and 1 full gallon of muriatic acid. I haven't had the filter on 24hrs but I've increased it tremendously...to 12-14hrs.

4.6ppm FC
.4ppm CC
7.5 PH = with the drop test it says 2 drops to get it to 7.2PH
80ppm Alkalinity
360 Calcium Hardness
100+ ppm CYA (I don't know how much but it doesn't get to 100 before the spot disappears...if it's incrementally like it is at 80, 90 and 100...I'd estimate somewhere like 130ppm.

[PoolDoc]

You should be able to enter the chart, after you register, but before you post. Actually, you can enter data before you register, but I have to dump it, because without a user name I can't match it up.

With a green pool and a CYA>100 ppm, you need to add 30 ppm FC tonight (30/PF9 = 3lbs chlorine gas equiv) which is 6 *gallons* of 6% (check the %!) bleach or 8 96oz jugs.

Test your chlorine the following morning, and add bleach to return levels to 30 ppm (3.5 ppm per 96oz jug of 6%)

When you test your chlorine, use the 10 ml sample size instead of the 25 ml sample -- saves reagent, and you almost never need to know chlorine levels to the nearest 0.2 ppm.

Distilled water + CYA test:

1. Get a 1 gallon jug of distilled -- not bottled, not spring, not natural, but DISTILLED -- water.
2. Collect a sample of pool water.
3. Pour 2/3 of a cup of DISTILLED water into a CLEAN container.
4. Pour 1/3 of POOL water into the same container; mix.
5. Collect your 14 ml of CYA test sample from the MIX in #4
6. Add 14 ml of melamine (R0013) reagent to the test bottle. Mix
7. Wait 15 seconds; mix again.
8. Wait 45 seconds; then test.
9. Multiply results x 3