New plaster - cloudy

[srikantheee84]

I’m a new pool owner and pool has been filled up since April 1st using pebble tech. ABC is taking care of the start up. They suppose to come yesterday and didn’t show up and pool looks cloudy and green. Here is my test results using tf test kit.

Ch- 175
Fc - 0
Cc- 0
Ta- 140
Cya - 25
Ph-7.8

Poolwerx recommended to shock the pool with 6~8 pounds.

Not sure whether to do it or wait until Monday for ABC to come and take care of it.

I brought some HTH shock from Costco today.

Please advice!

 

[ajw22]

Show us the label on that HTH shock showing the ingredients.

Your CYA is 30 if the dot disappears between 30 and 20. We round up.

You need 3 ppm of chlorine in the pool. I don't know what level you were planning to "shiock" it to.

We use PoolMath

 

[ajw22]

In a week do a Overnight Chlorine Loss Test. If the pool fails the Overnight Chlorine Loss Test then follow the SLAM Process

You don't want higher then 3-4 ppm of FC in the pool until after the first 30 days.

 

[srikantheee84]

Thanks @ajw22 . Is it ok to shock 22 days old pebble ?

 

[ajw22]

That is cal hypo. You can take the added calcium.

However 6 lbs of 56% cal hypo will raise your FC by 14.

Even for the SLAM Process with CYA 30 you only need FC of 12.

Return that box to Costco and find liquid chlorine.

Liquid Chlorine - Further Reading

www.troublefreepool.com

PebbleTec recommends FC or 1-3 ppm for the first 28 days.

http://mmgtx.com/docs/PTI-Start-Up-Maintenance-Procedures-Chlorine.pdf

 

[srikantheee84]

@ajw22 Added 3 quarts of 10% liquid chlorine like couple of hours back. Right now FC is reading at 0.75. Any thoughts ?

 

[mknauss]

Any thoughts ?

You added 2.8 ppm FC worth of bleach. Add another of the same amount until you test at or near 3 ppm FC. Do that every day until you get to the point you can follow the SLAM Process based on your plaster start up procedure.

How did you measure 0.75 ppm FC? That is not possible with a proper test kit.

 

[srikantheee84]

You added 2.8 ppm FC worth of bleach. Add another of the same amount until you test at or near 3 ppm FC. Do that every day until you get to the point you can follow the SLAM Process based on your plaster start up procedure.

How did you measure 0.75 ppm FC? That is not possible with a proper test kit.

Chlorine drop test - one large scoop of R0870 and with three drops of R0871 the color changed to white

 

[mknauss]

Chlorine drop test - one large scoop of R0870 and with three drops of R0871 the color changed to white

10ml water? If so, that is 1.5 ppm FC. Each drop of R0871 to clear is 0.5 ppm FC.

 

[ajw22]

@ajw22 Added 3 quarts of 10% liquid chlorine like couple of hours back. Right now FC is reading at 0.75. Any thoughts ?

All that Marty said plus testing a couple of hours later the algae in your pool could have consumed much of the FC.

Test 30 minutes after adding the LC to check your FC that you added. With an algae problem your FC can be consumed rapidly.

 

[srikantheee84]

10ml water? If so, that is 1.5 ppm FC. Each drop of R0871 to clear is 0.5 ppm FC.

Yes. 10 ml water.