Steps on wall stairs going green but pool chemistry tests ok

[Rockstead]

I've noticed my wall steps have been going green for well over a month, maybe two but I haven't moved to act because the pool itself keeps testing perfectly.

What's the right course of action here, does it mean I have to shock the entire pool? Is there a way to just treat the stairs only? In the past if my stairs started going green then the whole pool would follow but not in this case.

Thx.

 

[Bama Rambler]

Re: Steps on wall stairs going green but pool chemistry test

Have you ran an OCLT? That's the first thing I'd do if something didn't seem right.

Does the green easily brush off?

 

[Rockstead]

Re: Steps on wall stairs going green but pool chemistry test

Have you ran an OCLT? That's the first thing I'd do if something didn't seem right.

Does the green easily brush off?

It does not brush off, I haven't run the OCLT recently but when I first noticed the green I did check my FC first thing in the morning and there was FC but I wasn't really measuring that up against anything, I'll try that.

 

[Bama Rambler]

Re: Steps on wall stairs going green but pool chemistry test

If it doesn't brush off it's most likely not algae. It's likely staining. try taking a trichlor tablet and hold on it for a little while and if that doesn't work, take some crushed vitamin C tablets in a sock and hold on it. If the trichlor lightens it, it's an organic stain and if the vitamin C lightens it it's metals.

 

[Rockstead]

Re: Steps on wall stairs going green but pool chemistry test

If it doesn't brush off it's most likely not algae. It's likely staining. try taking a trichlor tablet and hold on it for a little while and if that doesn't work, take some crushed vitamin C tablets in a sock and hold on it. If the trichlor lightens it, it's an organic stain and if the vitamin C lightens it it's metals.

Is crushed vitamin C sold under a chemical name or general product at the pool store by any chance?

 

[jblizzle]

Re: Steps on wall stairs going green but pool chemistry test

Pretty sure you can just buy some vitamin C tablets from the pharmacy and crush them up yourself ... or rub them on the stain.

It is really ascorbic acid which is what you would buy if you were going to treat the entire pool.

 

[Rockstead]

Re: Steps on wall stairs going green but pool chemistry test

Pretty sure you can just buy some vitamin C tablets from the pharmacy and crush them up yourself ... or rub them on the stain.

It is really ascorbic acid which is what you would buy if you were going to treat the entire pool.

Digging up and old post.

Since I do have some orange rust like staining on both pool stairs and green stains on ladder, I would like to treat the entire pool.

Is Ascorbic Acid sold in different concentrations? Under different names? How is it applied?

 

[jblizzle]

Re: Steps on wall stairs going green but pool chemistry test

There is a link to the process in the Metals article in Pool School.