Why is my blond or tinted hair turning green?
High levels of copper in the pool. This can arise either because of over-use of copper based algaecides, or because the pH of the pool water has been allowed to drop to a point at which it starts to corrode the copper in your pool equipment.
- Correct the pH.
- Treat your pool with a metal removing chemical. Ask your pool professional for advise on choosing this product.
These are the two most likely causes.
- The chlorine level in the pool is so high that it bleaches the coloring agent in the test kit.
- Determine the approximate level of chlorine by diluting the sample of pool water with an equal quantity of natural or distilled water; multiply the answer by 2. If there is still no reading, repeat the process and multiply the answer by 4…and so on.
- If the actual chlorine reading is not too high (i.e. around 10ppm), suspend dosing and allow it to drop over a period of time.
- If the chlorine reading is significantly higher, the chlorine level should be lowered. The best way is through dillution (adding fresh water) of the pool water.
- High levels of ammonia in the pool water.
See a pool professional for advice on the treatment of ammonia.
There are three possible causes.
- In outdoor pools, the hypochlorous acid (free chlorine) is being decomposed by ultra violet from the sun’s rays.
- For pools using liquid chlorine (sodium hypochlorite) or calcium hypochlorite, add stabilizer (cyanuric acid). This should be dosed directly into the pool, NOT pre-mixed with the chlorine.
- Alternatively, switch to a stabilised chlorine such as – dichlor granules or trichlor tablets
- High water temperature. The logic is simple. Micro-organisims are more at home in warm water and breed more quickly. A greater number of organisims will create a greater and higher chlorine demand.
As a rough rule of thumb to bear in mind if there is a heat wave, if the pool water temperature goes above 80 degrees farenheit, the chlorine demand will double for each increment of 10 degrees.
- The dose rate of chlorine must be increased proportionately. Keep a close check on chlorine levels in hot weather.
- Because chlorine levels have not been high enough, there has been a build-up of pollutants, and therefore an increase in chlorine demand.
- Super-chlorinate the pool.
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