Green pool, I'm losing faith in the fight!!

[Divin Dave]

The reason 7.2 is recommended, is because the slam process is going to raise the PH. The 7.2 is going to prevent it from going too high while slamming... as that might not be good in case you end up slamming for several days, and especially for plaster pools.

The high FC will also effect any ph test results, so it wont be possible to keep an eye on Ph by testing.

Or...should I get it closer to 7.2?

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[cdkoster]

Just tested again, 7.5

Going to add 3 lbs dry acid according to poolmath and hope for the best



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[cdkoster]

While I'm thinking about it, should I start with the exact amount of bleach (3.75 called for to get FC to 16) or just add all of the 4th bottle?

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[Richard320]

While I'm thinking about it, should I start with the exact amount of bleach (3.75 called for to get FC to 16) or just add all of the 4th bottle?

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I think most of us would just dump all 4 at once for the convenience factor. In a pool as green as yours, by the time you get to the fourth jug, that extra 1/4 bottle is probably already used up.

 

[cdkoster]

Thanks, that's what I was thinking

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[cdkoster]

Pre SLAM pics

7.2 on the nose

Starting my SLAM

R-0871 refill should be here tomorrow or tuesday, let's hope my current supply lasts enough!!

4 bottles of 121 oz 8.25% bleach
Slam target = 16


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[cdkoster]

Test #1
Slam Level = 16
FC = 21
CC ~ 0

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[cdkoster]

In order to stretch my 0871, what are you opinions on bare minimum test intervals while still being diligent?

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[Richard320]

In order to stretch my 0871, what are you opinions on bare minimum test intervals while still being diligent?

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2 hours. If you go to a 5 ml sample, each drop is 1. But being off a little can mean a big difference, so only do this as the actions of a desperate man.

 

[cdkoster]

Test #2
SLAM = 16
FC ~ 19
CC = 0

Going to wait 2 hours to test again unless any of you object.

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[h2ctpdjl]

This probably isn't going to lift your spirits any, but the green shade of your pool water is gorgeous! Happy Slamming!

 

[cdkoster]

I love the emerald myself! It didn't go over so hot when my girlfriend threw a baby shower for a friend :-O

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[Divin Dave]

haha!

This probably isn't going to lift your spirits any, but the green shade of your pool water is gorgeous! Happy Slamming!

 

[cdkoster]

Test #3
Slam Level = 16
FC = 17.5
CC <0.5

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[cdkoster]

Looks like the trend is to drop FC by 1 every hour, can I assume this continues and base the evening on that?

What is the course of action to maintain now that I'm dropping close to my SLAM target? Should I start adding 30 oz every hour to counter the 1 ppm hourly drop?

I want to continue to test as much as I need to, but I'm starting to get slim on 0871!



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[jblizzle]

No you can not assume it will always drop the same. At night it should not hardly drop at all. Sounds like you need to order refills.

 

[cdkoster]

Already on order, should be here hopefully tomorrow, Tuesday at the latest, but I'm almost out I have the smaller Tayler test kit but don't know how to use it to show higher than 5 FC

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[JVTrain]

You can dilute the sample. But every time you half it you lose accuracy so it'd be more ballpark guess than anything.

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[cdkoster]

Test #4
SLAM = 16
FC = 17
CC <0.5

Sun is completely behind the horizon now.

I might have enough for one more 10ml test with the k2006, I better start figuring out how to use the other test for a day It's the smaller Tayler kit DPD deluxe from Leslie's...it uses the two liquid drops instead of the powder.

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[Richard320]

I might have enough for one more 10ml test with the k2006, I better start figuring out how to use the other test for a day It's the smaller Tayler kit DPD deluxe from Leslie's...it uses the two liquid drops instead of the powder.

Use a mixing tube to dilute your sample with bottled (non-chlorinated!) water then multiply your result by the appropriate factor. Unlike the yellow OTO test, the DPD test doesn't get darker and darker at higher FC levels. It eventually bleaches out giving a false low.