Sure, China won its third consecutive gold medal on Tuesday, but the buzz was about the color of the water in the diving pool — a murky green. FINA can confirm that the reason for the unusual water color observed during the Rio diving competitions is that the water tanks ran out of some of the chemicals used in the water treatment process. British diver Tom Daley, who earned bronze in men's synchronized 10-meter on Monday, tweeted a photo of the two pools next to each other and captioned it, "Ermmm...what happened?!" As of Friday, the pool is closed — and as a correspondent for the Today Show noted, the issue isn't limited to the water: 
 
 The Olympic diving pool has been closed again because of water quality issues...a German diver says "the whole building smells like a fart" — Tom Steinfort (@tomsteinfort) August 12, 2016 
 
 At first, Rio Olympics attributed the green color to "a proliferation of algae." The FINA Sport Medicine Committee conducted tests on the water quality and concluded that there was no risk to the health and safety of the athletes, and no reason for the competition to be affected. One other question: How does a change in pH change the color of the water? Two: A too-high pH would render the chlorine ineffective, which could then allow for the proliferation of algae. Mario Andrada, a Rio spokesperson, told the Associated Press, "We did all the chemical tests." "There's a lot of chatter going on in the aquatic industry about this." This was full-on lime Jell-O green, close to the color swatch movie set designers turn to when they want to make something look radioactive.
– If you happened to tune into a diving event Tuesday, you probably noticed the pool at Rio's outdoor aquatics center was "as green as split-pea soup," as the National Post puts it—or "close to the color swatch movie set designers turn to when they want to make something look radioactive," per Vox. Indeed, just a day earlier the outdoor pool had appeared crystal clear. Vox floated several theories, including an insane amount of urine in the pool, or perhaps a corroding pipe. (BuzzFeed also rounds up theories and reaction.) An official statement from Rio's organizing committee said the cause was under investigation, though a spokesman late Tuesday chalked it up to a "proliferation of algae" whipped up by "heat and a lack of wind," reports the AP. "it will be blue from now on," he promised. But as an image at Gizmodo shows, the problem appears to have shown up Wednesday in the neighboring water polo pool. Officials had previously said the green water posed no danger to athletes, and one half of Canada's women’s synchronized diving pair, who won bronze on the 10-meter platform Tuesday, certainly didn't mind. "[Diving] is a visual sport and you have to see the water," Meaghan Benfeito tells the Post. "The fact that it was completely different from the sky really helped us." (Team USA won multiple gold medals in a separate pool Tuesday.)