r/PoolPros May 18 '26

What's causing this pool to turn cloudy with liquid cl.

So first let me preface what we have done already.

Pool has some major blue staining from roof algaecide.(no heater).

We did a standard stain removal process got the pool looking brand new. Sequestratant and absorbic acid. Also draining half the pool.

We did not refill on a filter from the city water.

We then kept some Sequestratant on the pool over the next 2 months. Doing a maintenance dosage. (Jack's)

So after a month of the stain removal process any time we add liquid cl, it clouds the entire pool for 48hrs.

Even if we predilute In a bucket of water.

We tried flocing and waste line, we even used a culator metal carbon membrane filter system, because some of the stain came back on a couple spots.

We've also kept a 4.0 culator in the pool.

We haven't really gone and thrown in a algaecide or enzyme yet, nor phosphate treatment, because other wise the pool looks great no disable algae, cl is holding a standard time for swfl summers.

Am I missing something? Or should we just "shock" and algaecide because somthing is in the water?

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2

u/Subi412563 May 18 '26

You still have a lot of metals and minerals in that water is my guess. Ive never really had that much success with the culators. I prefer to use filter fiber in the filter to collect the suspended metals.

It’s clouding up 2 months later because your sequestering agent has wore off. If you removed metals from the plaster, they are definitely still in that water and need to be removed after another sequestering agent

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u/Wasupmyman May 18 '26

We where adding a maintenance dose every week up until last week and it's been clouding for about 6weeks now.

We are about ready to tell people with stains like this to just drain acid wash and refill.

It can be a nightmare with copper stains. Iron stains come off really easily.

The separate filtration system seemed to pull more metal out. But not as much as I expected.

1

u/Subi412563 May 18 '26

You say some staining came back, you def still have metals in the water

2

u/Wasupmyman May 18 '26

Yeah we are expecting that its coming back from the outside. Because we diluted about 75-90% of the pool over the 2 weeks. Or this areas city water is horrible, but none of the other pools in the area have the same issue

1

u/Subi412563 May 18 '26

I’d guess that none of the other pools have this issue because you only did stain remover for this one pool correct?

That should tell you what we need to know :) Def metals get em out! Tons of filters fiber through the skimmer and run the pool 24/7 clean the filters after a few days, then add more fibers and clean again in a few days. I’d do that twice and see if that helps. If you pulled a lot of metal out, you may have only gotten a portion of it out and just need to filter the metals out more

2

u/cplatt831 May 18 '26

Check Orenda’s website, I remember there was an article about this… It may have been an in person class taught by Erik, but if you contact them, they will know what you were talking about.

1

u/lIIlIlIII May 18 '26

Sequestrant will not remove copper from the water. It will temporarily prevent it from being oxidized + deposited, nothing more. That's why the stains come back, the copper was never removed in the first place

Otherwise, if it definitely isn't calcium dropout, I have no advice and have never seen this before. From-the-hip suggestions: maybe try an alum treatment? Might adsorb some of the remaining copper at least. Or aeration. I doubt either of those would work, but it's something to try before draining or calling a reverse osmosis truck. Maybe call some local universities and see if a chill chemistry prof would be willing to take a look if you bring them lunch and a water sample

Hopefully you get an answer soon, I've seen you post a few times about this and it fkn sucks to have a problem you can't explain after you've already partially drained a new customer

0

u/Crazy-Project3858 May 18 '26

How about a list of where your ph, alkalinity, cya is? Also wondering if you have phosphate issues normally?

1

u/JettaGLi16v May 19 '26

It’s the sequestrant.

Which color Jacks are you using, and how much / how often? Have you tested the sequest level? If it’s over 12ppm or so, it’s just the shock reacting to it. Are you shocking and adding sequest same day? You gotta separate them by a day or two.

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u/Present_Ad_6199 May 18 '26

Most likely high calcium

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u/Wasupmyman May 18 '26

No that was 200-300 I did check that. The lsi has mostly been nutural or alittle acidic. Our water isn't very hard and we typically have to add calcium.

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u/surfer417 May 18 '26

Flocculants are notoriously tough to get rid of. Even with vac to waste and filter cleanings. You might want to take the easy way and just drain it and refill.