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Mystery solved: Officials get to bottom of why Olympic pools turned green

However, because that is a 10-hour process, the diving pool will remain filled with the green, stinky water.

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There are two warmup pools at Maria Lenk, and neither was affected by the issues inside the stadium.

They’re going to drain out the green water from the synchronized swimming pool at the Maria Lenk Aquatics Center and pump in almost 1 million gallons of new water from a practice pool. Ultimately, clear water was needed for competitors in the synchronized event so they could see their teammates underwater.

The material inside the filters was changed Friday night, Rio officials said.

Posting the picture on Twitter, she told fans: “Women’s individual soon and the water isn’t green anymore”.

Hydrogen peroxide is sometimes used in pools-often to de-chlorinate them.

Some athletes have complained of itchy or sore eyes.

The venue’s director, Gustavo Nascimento, gave a new reasoning for the pool turning into the “green swamp”, as it has become known.

The colour change has been blamed on a contractor, who apparently dumped around 80 litres of hydrogen peroxide into the pool by mistake. Basically, eliminating the chlorine allowed for the growth of “organic compounds”, including what might’ve been algae.

That, officials believe, is where the problem started.

According to officials, a local pool-maintenance worker mistakenly added 160 liters of hydrogen peroxide to the waters on August 5, which partially neutralized the chlorine used for disinfection. Worse, because there was still some chlorine in the pool, the monitoring system didn’t flag the problem immediately, leading to several days of competition in green water.

However, when the hydrogen peroxide is mixed in with chlorine, it has the opposite effect.

There was never a health risk, a health worry or concern in any shape or form.

“We have over promised and under delivered”.

“The most important issue is to be sure that the water quality does not affect the health and safety of the athletes, which is why we’re conducting tests throughout the day to make sure everything is OK”, Marculescu said in an interview with the New York Times.

This information came after Rio Games spokesman Mario Andrada, in an attempt to try to explain the mishap last week, said, “We first learned that chemistry is not an exact science”. Andrada said that they’ll have to drain out all 984,040 gallons of green water and put in clean stuff from a nearby practice pool.

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Officials said they would not drain the diving pool.

Green pool to be drained, refilled for synchronized swimming