Brown stains spreading

One more question for now (I'm sorry if I'm driving you crazy). After the treatment, and in general.. how often do you add more sequestering agent?

I added half a pound of Ascorbic Acid to my pool this afternoon. Then about an hour later since the stains were still there another half pound. Now I'm out of AA but the stains are lighter but streaky and still there.

Marie, you mentioned that there was more that could be done. I think I'm at that point now. Can you help?

You can use muriatic acid, along with the stain treatment- which will be a much harder project. What is your ph now? How much sequestering agent did you put in? Before you start with the acid, I would let the water keep circulating. Make sure you have your ph down to 7 or 7.2 - you can lower it with muriatic acid, put enough sequestering agent in for a full dose according to the back of the bottle. I always add the whole quart for 10,000 gal. So you should have added the whole quart just to be safe. Let me know if this takes the stains off. If not, I will give you directions for the treatment with the muriatic acid, but you will need more ascorbic acid as well.

I am going out to test the Ph now. If it is higher than 7 I will bring it down.

When I added water yesterday I added a quart of sequestering agent. Then today after the ascorbic I added another quart.

I will post again tomorrow to let you and waterbear know what's happening and how the stains look. Since it's dark and the pool light doesn't work I can't really tell about the stain situation right now.

I have the pump on recirculate. Should i leave it on all night?

I'm going to order more AA in the morning. Whether I need it this time or not I'm sure I will need it at some point.

Thanks for your help!

With my drops kit my Ph looks to be at 6.8 right now. :confused: What should I do? Can I add some borax tomorrow?

No, just leave it there, it won't hurt overnight, and it will help to get rid of the stains. You can take your ph up tomorrow using borax if the stains are gone. Let me know.

Thanks for all of yoru help. I will post tomorrow as to the condition of the stains and go from there. I placed an order from the chemistry store for 2# of ascorbic acid. They are a 2 hour drive from here and I would go pick it up if I had the time but it's just impossible since I am the single mom of an almost 2 year old. At any rate it shouldn't take long for it to get here since they are so close. If I still have stains we can try again. I'm determined to have a sparkling pool!!!!

You will, you may have a sparkling pool today - let me know - sometimes it takes the low ph to take off the remaining stain. Keep the filter running.

Today I have pretty clear water still but some staining remains. It is a whole lot lighter and almost something I could live with, but still a little bit stained and a little streaky. How should I proceed?

Thanks,

Gerri

Hi gerri, I would wait for your order of the ascorbic acid - keep your ph low, and when the ascorbic acid comes add some where you see the stains - let the water circulate for a couple of hours and see if it all come off - make sure there is enough of the sequestering agent in the water. You shouldn't need a lot of the ascorbic acid - but keep adding some with the pump in circulate until all of the stains are gone. Then you will have to reabalance the water again. Keep me informed - you are getting there.