Extremely High CC

[Mattiaci]

I just opened our pool last Sunday night and found that we had some mud throughout the bottom of it from a rain storm over winter. I ran my pump and filters non-stop for several days and it was fairly clear by Tuesday. I got the Ph down to 7.2 and wanted to start the SLAM process. Surprisingly, my chlorine level was .5 but my CC was off the charts - close to 15!!! it surprised me because the water is very clear. I started the SLAM PROCESS but was a little short on bleach. Day 1(Wednesday night)- put in 5 bottles. Day 2(Thursday night) put in 9 bottles. Was sick and couldn’t test and add bleach yesterday. Now, I just checked and the chlorine level is still showing .5 with the CC being 12.5. Does that sound right? At this rate, it may take atleast one week at full slam to get this under control? Would adding chlorine every hour increase the speed of this process?

 

[JamesW]

Did you use Jack's #2 copper and scale stuff?

Copper Staining

Looking for some advice - was going to use Jack's Stain Stuff to remove copper stains that are now present throughout our pool. They are only noticeable at night or early morning before the sun starts shinning on the pool. My main issue is that I don't want to have to shut the pool down for up...

www.troublefreepool.com

Looks like it worked, but it locks up the chlorine for weeks.

It's sulfamic acid that is combined with the chlorine.

Just ignore the CC and use TC as FC.

 

[Mattiaci]

I used the Jacks products back in the Fall, September-October before we closed the pool. You think that is causing the crazy #’s?? This should go away in a couple weeks?

 

[JamesW]

I used the Jacks products back in the Fall, September-October before we closed the pool. You think that is causing the crazy #’s?? This should go away in a couple weeks?

That is just about the only thing that will create CC that high.

It might take months to diminish.

I would just wait it out and not worry about it too much.

Use TC as FC and periodically do an OCLT to make sure that nothing is growing.

Overnight Chlorine Loss Test

 

[Mattiaci]

Did you use Jack's #2 copper and scale stuff?

Copper Staining

Looking for some advice - was going to use Jack's Stain Stuff to remove copper stains that are now present throughout our pool. They are only noticeable at night or early morning before the sun starts shinning on the pool. My main issue is that I don't want to have to shut the pool down for up...

www.troublefreepool.com

Looks like it worked, but it locks up the chlorine for weeks.

It's sulfamic acid that is combined with the chlorine.

Just ignore the CC and use TC as FC.

I used the Jacks products back in the Fall, September-October before we closed the pool. You think that is causing the crazy #’s?? This should go away in a couple weeks? I just figured since the FC number hadn’t changed at all after putting all that bleach in; it must be eating away at something. I’m just a little surprised it’s so Dang high with such a clean clear pool.

 

[JamesW]

It's from the sulfamic acid.

Not much can be done.

 

[Mattiaci]

It's from the sulfamic acid.

Not much can be done

Thanks for the reply. Do you think I should continue to SLAM until FC holds? And then disregard CC for the time being. I had no idea the stain product could affect CC so that is great info.

 

[JamesW]

Do you think I should continue to SLAM until FC holds?

Overnight Chlorine Loss Test

 

[Mattiaci]

Yes, I had the SWG running along with adding bleach and I was still seeing a big FC loss each day. I’m going to shutoff the SWG for the time being to get better gauge on actual FC loss and get this under control. With regard to SLAMMING, I’ve seen mixed info on whether it makes sense to add bleach during the day. Is there any benefit in adding bleach throughout the day vs ALL at night when the sun goes down? I want to fix this fast because kids want to swim but it’s gonna be 85 today and mostly sunny all day. I’m worried that I’m the sun is eating up most of what I put in the pool.

 

[JamesW]

If you pass the OLCT, you are fine.

Just use TC as FC and ignore CC.

What are the chemistry readings?

Keep the CYA in the 50 to 60 range.

 

[Mattiaci]

Thanks James for your help. I’ll take new readings and post shortly.

Any thoughts on day vs night?

 

[Mattiaci]

If you pass the OLCT, you are fine.

Just use TC as FC and ignore CC.

What are the chemistry readings?

Keep the CYA in the 50 to 60 range.

Cya - 45
pH - 6.60 - dropped from recent rain
FC - 1.5

 

[JamesW]

What is the TA?

If you pass the OCLT, begin to keep the TC at about 10% of the CYA.

Don't worry too much about daytime loss.

 

[Mattiaci]

What is the TA?

If you pass the OCLT, begin to keep the TC at about 10% of the CYA.

Don't worry too much about daytime loss.

TA is low - currently 30

 

[JamesW]

TA is low - currently 30

OK, I would raise it some and your pH will recover on its own.