The water in the pool may be groundwater.
Groundwater is a fairly complex solution that usually contains soluble gases, minerals and organic matter. More than 80 chemical elements have been discovered.
Groundwater itself contains a lot of minerals, which contain many metal ions.
For example: copper, iron, manganese, potassium, calcium, magnesium, strontium and other ingredients.
These are all in an ionic state.
So the water looks very clear and clean, but after adding the pool disinfectant, the water will change color.
At present, the composition of the swimming pool disinfection tablet is trichloroisocyanuric acid, and the component of the disinfecting tablet, trichloroisocyanuric acid, is also oxidized, which oxidizes metal ions in the water.
The yellow color of water indicates that the water contains a large amount of iron ions. When reacted with trichloro acid, iron oxide is formed and the water will appear yellow.
So how to solve it? If the water contains metal ions, a metal ion scavenger can be used.
The metal ion trapping agent is also a swimming pool water treatment agent and clean water imported from the United States.
After use, the ions are removed.
Then use the pool disinfectant water will not turn yellow.