Hi everyone, my name is Francesco and I write from Italy. I discovered your fantastic forum and I decided to register because in Italy I could not find a solution to my problem even with qualified technicians. I have a 22x8m swimming pool with skimmer filtration system and Zeolite as filter material (changed last year) and I only use drinking water from the municipal network. for a couple of years now I have had big problems with iron stains forming all over my pool and which I can only remove with the use of ascorbic acid. however, as we know, this involves lowering the pH and destroying the chlorine. unfortunately after each treatment with AA as soon as I start adding chlorine again (even if I do it gradually) the stains in the pool begin to form again especially on the stairs and on the level of the waterline despite using sequestering products regularly. I'm desperate and don't know what to do anymore
big problem with iron stains
- Thread starter leron85
- Start date
- Jul 21, 2013
- 65,594
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Welcome to TFP.
Do you know the source of the iron in your pool water? Is it in your municipal water supply?
If so have you put filters on your water supply?
Have you tried filtering your pool water through Polyfill?
Read Iron Fill Water Filter - Further Reading
Do you know the source of the iron in your pool water? Is it in your municipal water supply?
If so have you put filters on your water supply?
Have you tried filtering your pool water through Polyfill?
Read Iron Fill Water Filter - Further Reading
there is no abnormal amount of calcium in the water network. but the presence of iron is not high in the swimming pool either, however these spots always form and disappear only with ascorbic acid
- Jul 21, 2013
- 65,594
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I don’t know why you are discussing calcium.
How are you judging that? You cannot measure the iron that is deposited on the walls or being sequestered.
Then your iron levels are high enough to stain.
I measured the levels of iron present in the water that comes out of the network
- Jun 1, 2018
- 16,073
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Are you also using a sequesterant?
www.troublefreepool.com
Ascorbic Acid Treatment - Further Reading
www.troublefreepool.com
yesAre you also using a sequesterant?
Ascorbic Acid Treatment - Further Reading
- Jun 1, 2018
- 16,073
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
CTX-700 sequestrante metalli - Acquaspecialist
Trattamento specifico per prevenire l'acqua torbida e precipitazioni di calcare. Formato e prezzo Disponibile formato da 5 l. Il prezzo si intende €/l iva esclusa. Consigli d'uso Diluire la quantità necessaria in un recipiente contenente acqua e distribuire la soluzione ottenuta uniformemente...
acquaspecialist.it
Piscimar Ione Magnetico PM-615
Piscimar Ione Magnetico PM-615 del marchio Piscimar al miglior prezzo! I migliori prodotti di Accessori piscina Piscinayspa. Piscine chimiche
www.piscinayspa.com
- Jun 1, 2018
- 16,073
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
I don’t speak that language 
Any chance you can find the msds sheets for either of those? That’s a thing in Italy too right? If you find them we can use google translate to see what the ingredients are.
You may have a really high iron level and the sequesterants can’t hold it all.
When you add chlorine to the water does it change color? (The water itself)
Any chance you can find the msds sheets for either of those? That’s a thing in Italy too right? If you find them we can use google translate to see what the ingredients are.
You may have a really high iron level and the sequesterants can’t hold it all.
When you add chlorine to the water does it change color? (The water itself)
WHAT IS CTX-700 METAL SEQUESTER?
CTX-700 is a metal sequestrant (iron, magnesium, etc...) and anti-limescale ideal to prevent turbid water and limescale precipitation.In addition, it prevents the formation of other stains caused by metals.
Ideal for all types of swimming pools.
MAIN FEATURES
- Dispersing and inhibiting product for the prevention of scale and stains on the tank caused by metals.
- It helps prevent clogging of filters and corrosion of the metal parts of the recirculation and filtration system.
- It keeps water recirculation circuits, pumps and heat exchangers clean.
- Eliminates calcification from filters favoring filtration.
- Does not create foam.
- It prevents the water from becoming cloudy and limestone from falling.
Sequestrant of iron and manganese. It is chlorine stable, so its effect is long-lasting.
Initial dosage: 1.5 L/100 m3. Maintenance: 0.5 L/100 m3.
This product can be used in
Concrete
pools Liner
Pools Polyester Pisicnas
- Jun 1, 2018
- 16,073
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
I gathered all that from the links - just no actual ingredient information.
when i add chlorine the water doesn't change color but the pool towel starts to get stainedI don’t speak that language
Any chance you can find the msds sheets for either of those? That’s a thing in Italy too right? If you find them we can use google translate to see what the ingredients are.
You may have a really high iron level and the sequesterants can’t hold it all.
When you add chlorine to the water does it change color? (The water itself)
I know friends who use well water and when they fill the pool the water is completely brown and using these sequestrants within 2/3 days the water becomes perfect and the towel doesn't get stained. I'm thinking that the problem is due to my pool cover which is very old
I don’t speak that language
Any chance you can find the msds sheets for either of those? That’s a thing in Italy too right? If you find them we can use google translate to see what the ingredients are.
how much ascorbic acid recommended for each cubic meter of water
- Jun 1, 2018
- 16,073
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
“You will need about a half to one pound of ascorbic acid per 10,000 gal. Go lighter on it and see if all the stains lift off before adding more.”
From here
Step3 follow all the steps in order
www.troublefreepool.com
Be sure to use polyquat 60 to prevent algae while fc is low.
Btw- what is your current fc & other test results?
From here
Step3 follow all the steps in orderAscorbic Acid Treatment - Further Reading
www.troublefreepool.com
Btw- what is your current fc & other test results?
I read in the guide that some people have had success with the product Culator Egg. what is this product about?“You will need about a half to one pound of ascorbic acid per 10,000 gal. Go lighter on it and see if all the stains lift off before adding more.”
From here
Be sure to use polyquat 60 to prevent algae while fc is low.Ascorbic Acid Treatment - Further Reading
Btw- what is your current fc & other test results?
Attachments
they also told me about this product in addition to the pumice stone. according to your experience can they be useful to remove iron stains?“You will need about a half to one pound of ascorbic acid per 10,000 gal. Go lighter on it and see if all the stains lift off before adding more.”
From here
Be sure to use polyquat 60 to prevent algae while fc is low.Ascorbic Acid Treatment - Further Reading
Btw- what is your current fc & other test results?
- Jul 21, 2013
- 65,594
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I would say more people are disappointed with the Culator but some people claim it helped them.