Appears the marcite is thinning

[Coheed]

I had my pool resurfaced in the spring of 2018, after taking the winter cover off and cleaning it up I noticed what appears to be thinning of the marcite. Pool chems updated today prior to posting. Any insight on this would be appreciated.

It is throughout the pool, spa was easiest to get picture of.
pool was full all winter, drained the spa to get photos.

 

[JamesW]

I'm not sure that I see thinning.

The green is likely to be copper.

 

[ajw22]

No CYA tests for 7 months and no FC for 19 days in your PM log. Can't comment on your water chemistry based on your PM log.

Your plaster looks a bit dirty and stained. I don't see any thinning.

 

[Coheed]

I'm not sure that I see thinning.

The green is likely to be copper.

ok, wasn’t tracking copper buildup as a problem. It is in my algaecide so I’ll get some stuff to neutralize the copper.

 

[Coheed]

Thanks, added the CYA test.

No CYA tests for 7 months and no FC for 19 days in your PM log. Can't comment on your water chemistry based on your PM log.

Your plaster looks a bit dirty and stained. I don't see any thinning.

 

[ajw22]

ok, wasn’t tracking copper buildup as a problem. It is in my algaecide so I’ll get some stuff to neutralize the copper.

What do you think will neutralize the copper?

Copper in Pool Water - Further Reading

www.troublefreepool.com

 

[ajw22]

Thanks, added the CYA test.

Is your FC really 0?

 

[Coheed]

Is your FC really 0?

Put tabs in last week... need to get my head out of the “winter mode” thinking it’s not burning off.

 

[Coheed]

What do you think will neutralize the copper?

Copper in Pool Water - Further Reading

www.troublefreepool.com

 

[JamesW]

You should discontinue the use of copper.

Maintain the CSI between -0.3 and 0.0.

 

[Coheed]

You should discontinue the use of copper.

Maintain the CSI between -0.3 and 0.0.

So my beloved super algaecide ?

 

[Coheed]

These are my tabs and algaecide I have been using for 2 years...

 

[ajw22]

I think your plaster is stained and colored by your water chemistry and the various pool store potions you have been using.

I don't think stain-out has the chemicals to lift copper. And I don't think you read the link I gave you before so here it is again...

Copper in Pool Water - Further Reading

www.troublefreepool.com

 

[ajw22]

These are my tabs and algaecide I have been using for 2 years... View attachment 129799View attachment 129800

Those "Xtra Blue" tablets have been adding copper to your water the whole time you have been using them.

Blue has been a pool manufacturer code word for copper. You should not use any chemical that says "blue".

 

[Coheed]

I think your plaster is stained and colored by your water chemistry and the various pool store potions you have been using.

I don't think stain-out has the chemicals to lift copper. And I don't think you read the link I gave you before so here it is again...

Copper in Pool Water - Further Reading

www.troublefreepool.com

Totally agree... been adding junk without knowing it. I see the link, I will try the stuff I ordered and see if it makes a difference. I’ll do some research on copper free ways to control FC and algae.

 

[wireform]

If your FC is that low you should bring it up and quickly with liquid chlorine. Even if you were to use tabs ? it will take too long for it to get the FC up to speed.

 

[ajw22]

Totally agree... been adding junk without knowing it. I see the link, I will try the stuff I ordered and see if it makes a difference. I’ll do some research on copper free ways to control FC and algae.

You are not going about this the TFP way. We suggest you only add things to your pool that you know what chemicals they contain and the effect you expect. Pouring a bottle of unknown potion in and seeing what happens is what leads to the problems you now have.

The way to control algae is the proper level of chlorine and CYA. I suggest you read ABCs of Pool Water Chemistry and ...

How to Chlorinate Your Pool

Before chlorinating your pool, you should know these simple tips. Learn the best way to add chlorine to your pool.

www.troublefreepool.com

What Are My Ideal Pool Levels?

Use our tool to find ideal chemical levels for any swimming pool. Check TFP recommended levels on pH, free chlorine, cyanuric acid, and more.

www.troublefreepool.com

The Free Chlorine and Cyanuric Acid Relationship

Managing your cyanuric acid and Free Chlorine levels is key to stabilizing your pool. Learn how these two items affect each other.

www.troublefreepool.com

 

[Coheed]

You are not going about this the TFP way. We suggest you only add things to your pool that you know what chemicals they contain and the effect you expect. Pouring a bottle of unknown potion in and seeing what happens is what leads to the problems you now have.

The way to control algae is the proper level of chlorine and CYA. I suggest you read ABCs of Pool Water Chemistry and ...

How to Chlorinate Your Pool

Before chlorinating your pool, you should know these simple tips. Learn the best way to add chlorine to your pool.

www.troublefreepool.com

What Are My Ideal Pool Levels?

Use our tool to find ideal chemical levels for any swimming pool. Check TFP recommended levels on pH, free chlorine, cyanuric acid, and more.

www.troublefreepool.com

The Free Chlorine and Cyanuric Acid Relationship

Managing your cyanuric acid and Free Chlorine levels is key to stabilizing your pool. Learn how these two items affect each other.

www.troublefreepool.com

So.... gonna knock out this copper stain, use the CULATOR and start using bleach to chlorinate. Balance CYA and FC. I got homework to do to know the way ahead toward a TFP!

 

[ajw22]

Do an Overnight Chlorine Loss Test to confirm your pool has algae.

Then follow the SLAM Process step by step with no shortcuts to get algae free water..

Once your pool is algae free then maintaining the proper FC and CYA will keep it that way.

 

[Coheed]

In adjusting my FC, I am using Pool store liquid chlorine. The Pool Math app doesn’t have a 10.5%, do I just change the percentage on the bleach and use those measurements?