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Normally caused by calcium build up or caclcification. Prevetion and cures can be found on my blog.See the link on this message Permanent brown stains are usually caused by "iron". Rebar attached to the pool exterior and encapsulated in bottom of a concrete deck is the usual suspect. Another cause, which can be reversed, is an older heater. If a heater is involved, have the headers and impellers checked for iron. If they're iron, have them changed-out, then try a sequestering agent following the directions. Permanent stains in fiberglass pools are caused by either iron (brown), chlorophyl (green), or air holes caused by failing gel coat (black).
What else can I help you with?
What causes Brown marks thast will not brush off salt water fibreglass swimming pool?
Usually iron
What causes brown stains in a toilet bowl?
Brown stains in a toilet bowl are typically caused by mineral deposits, such as iron or manganese, in the water supply. These minerals can react with bacteria and other substances in the water, leading to the formation of stains. Regular cleaning and using a toilet bowl cleaner can help prevent and remove these stains.
What coulour are alishas knickers?
white with brown stains in it white with brown stains in it
What causes brown stains in toilet?
Skidmarks account for 84.7% of all brown marks in a toilet bowl . Followed in a distant second place by Iron in your water.
How do you remove brown stains from teeth?
to remove brown stains from your teeth you will have to brush them or floss them...
Why is rice brown in colour when iodine solution is put on it?
cause iodine(brown) stains the rice
What was name of brown bar soap your grandma used for stains on clothes?
Kirkman brown soap for washing clothes. Where do you buy it?
How can I effectively remove brown stains from my toilet?
To effectively remove brown stains from your toilet, you can try using a toilet bowl cleaner specifically designed for tough stains, or a mixture of baking soda and vinegar. Scrub the stains with a toilet brush and let the cleaner sit for a few minutes before flushing. Repeat as needed until the stains are gone.
What is the brown stains on the front of your house after a heavy rain?
damp
What is the brown stains on tile grout above silicone?
Brown stains on tile grout that is above silicone, is probably a stain from something that was spilled. The stain will not be from the grout because it is located above the silicone.
What makes the brown stains on ceiling panels?
There are several factors that can cause brown stains on ceilings. The most common one is you have a water leak somewhere above the patch from a pipe or WC room.
How can I effectively remove brown stains in my toilet?
To effectively remove brown stains in your toilet, you can use a toilet bowl cleaner with bleach or a mixture of vinegar and baking soda. Scrub the stains with a toilet brush and let the cleaner sit for a few minutes before flushing. Repeat the process if necessary until the stains are removed.
