Newly Filled Swimming Pool Turns Black When Chlorine Added

[stickyb]

A new swimming pool, filled with water by a local water tanker. Clear until chlorine added, then turns very black and cloudy. ANyone know why?

[Erwin1011]

A new swimming pool, filled with water by a local water tanker. Clear until chlorine added, then turns very black and cloudy. ANyone know why?

Looks like your local tanker provided you with sewer water

[GuestHouse]

The problem is a chemical reaction between the chlorine and disolved metals in the water.

This causes a precipitation that appears black/cloudy or worst case Red. (red will stain the liner of the pool so if you get red colour you need to drain the pool to prevent the staining and imediately clean the liner - scrubbing!!)

The general cure for this black colour is to adjust the pH of the water, get a professional pool maintenance crew to do that for you. And then rely on the filters to remove the precipitate.

[englishoak]

Facinating !

[stevehaigh]

A new swimming pool, filled with water by a local water tanker. Clear until chlorine added, then turns very black and cloudy. ANyone know why?

same thing happened to me. it's metals in the water. here's how to fix it:

raise the ph with soda ash to about 8.2

add about 1-2kg of aluminum amonium sulphate (commonly know as sarn som in thai), thai's use it everywhere for cleaning water from wells.

the aluminum amonium sulphate will coagulate the metals and fall to the bottom. vacume the the s$$t every day until its clean and put the filter on waste, DO NOT PUT IT BACK IN THE POOL, it goes straight through the filter.

see my pool at http://2112design.com/stevepool2.jpg to http://2112design.com/stevepool5.jpg

as you can see, it really works, it went from black to crystal clear in about 4 days.

steve