It’s a yellow ish stain that area drawn hasnt grown but it has grown around the sides. My fc is 14 amd I vacuum and brush constantly I never had algae. My cya was 65 per Taylor test and it’s pouring rain so I’m not adding anymore chlorine- rain will not dilute CYA… I was gonna drain more but I can’t THUNDER!
When did we talk about slam? I see what it is but since my cya is 65 I’m planning on maintaining the recommended FC until or if I drain more water. I don’t have algae. The water is sparkling clean. Why would I need to slam if everything looks good?Don't worry about the staining or anything else right now. Continue to maintain the SLAM weather permitting. We tackle algae first, then stains. The chlorine is aggravating the metals, that's normal. Relax and enjoy the rain.
I'm sorry, I misread that. You did explain the slow water exchange. Ignore the slam nonsense.
Phew…I'm sorry, I misread that. You did explain the slow water exchange. Ignore the slam nonsense.
The speed/smart stir... Absolutely!
No I don’t know what that is(polyfil) and I agree because the staining has gotten so much worse. It’s from the cya and high chlorine combining right or something like that?
Polyfill is the same kind of stuff they use in pillows and other items as a form of stuffing. You can get it locally or online. It's used commonly here at TFP to help trap iron particles.
Iron reacts because of 3 things: The amount of iron in the water, an elevated pH, and elevated FC. The more iron you can remove, the less influence the other things have on it.
You might try some of those products at some point. Some products are relatively successful at pulling a stain off the surface. When stains are lifted, they remain in a soluble form in the water. At that point you don't see it and it can't be filter. What many people do is just live with it until water temps fall again and they do an AA treatment. An AA treatment lifts stains but requires an FC of basically zero which can allow algae to form, that's why colder water is best for that. Some people still do AA treatments in the hotter months, but it comes with that added risk of algae.
www.troublefreepool.com
Humor me please for a refresher of where your pool stands right now. Still no algae correct? We dismissed the need for a SLAM, or at least you are not doing one at the moment. You have been slowly but surely exchanging water in an attempt to lower the CYA. That's been the biggest thing right now. While doing that, also trying to maintain an elevated FC level commensurate with the high CYA to prevent algae. Unfortunately, while keeping the FC a little elevated, you discovered there is iron in the water which has caused some staining.Actually tested my cua tested 60 today o did it 4 x and ph was over 8 and chlorine was super high so that explains it. I can’t seem to keep ph down I’m using ph down when it’s not storming - but I’m not doing much else till I get that stirrer - I ripped open an old pillow and put poly fill in - I’ll update when I get that thing and we can talk trash
That's the tough thing about being forced to maintain an elevated FC over 10 when your CYA is high, it messes with the pH test. But now you can adjust things more normally. No more water exchanges needed at this time.
Yes, a bit more chlorine would be good. FYI - In your 20K pool, one gallon of 10% liquid chlorine is about 5 ppm of FC. If you add a gallon now you should be in good shape. Then, based on your work schedule, find a routine of how much (and when) to add liquid chlorine each day or two since we know pools love chlorine. 
Those are very good numbers.
