What is this discoloration??? Pinkish

[T3xas_salt]

I'm really not sure what this is? See picture

What I'm referring is that pinkish stuff... No texture difference, doesn't brush off with nylon or steel bristles. Can be seen throughout pool, visible mostly on surfaces that are at shallow depth.

Water chemistry has been normal, no issues with standard testing.

 

[mgtfp]

Probably some sort of metal staining. Try rubbing a vitamin C tablet over a stained area and report back what happens.

 

[kimkats]

Well that looks *interesting* for sure.

You say the standard testing shows good levels. What are you using to test with?

How long has the pick been going on?

 

[T3xas_salt]

Probably some sort of metal staining. Try rubbing a vitamin C tablet over a stained area and report back what happens.

I'll give that a try, thanks. Any idea what metal might cause that?

 

[T3xas_salt]

Well that looks *interesting* for sure.

You say the standard testing shows good levels. What are you using to test with?

How long has the pick been going on?

Probably been 4-5 months, was really faint at first and I thought my eyes were just playing tricks on me. I have water guru testing daily and take my water sample to Leslie's every couple of weeks. Only thing out normal has been copper at a peak of 0.5 ppm, added CuLator power pak bag to skimmer to lower the copper, it's down to 0.4 ppm. Iron is 0 consistently. Converted the pool to salt about 3 months ago.

 

[JamesW]

The blue is probably copper.

What is the CYA level?

Copper Cyanurate is a purple color, so high CYA can combine with high copper to produce a red or purple color.

Did you do the Vitamin C test as recommended?

 

[JamesW]

Purple / Indigo algae. Sticking to steps and bottom of pool

Hi, I have a new-to-me pool. The previous owner only concerned himself with chlorine levels and as a result left me with a highly chlorinated, extremely acidic pool. He and I added a gigantic bag of baking soda last summer, and I added more 10 days after opening the pool. Just before closing...

www.troublefreepool.com

 

[T3xas_salt]

The blue is probably copper.

What is the CYA level?

Copper Cyanurate is a purple color, so high CYA can combine with high copper to produce a red or purple color.

Did you do the Vitamin C test as recommended?

 

[T3xas_salt]

The blue is probably copper.

What is the CYA level?

Copper Cyanurate is a purple color, so high CYA can combine with high copper to produce a red or purple color.

Did you do the Vitamin C test as recommended?

CYA level used to be high when I bought the house, I changed some water it to bring it down (was 160ish brought it to 50). I did that water change around the time I converted it to salt, about 3 months ago. I don't recall having a high copper measurement around that time.

I have to go find a vitamin c test but did try it with half a lemon (seemed plausible but I'm not sure if it was effective and plan to do the vitamin c tablet soon). The lemon version did not show a change...

 

[JamesW]

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