article_snippet.sent: Staff at a commercial fish farm based at a lake in Huizhou City in southern China's Guangdong Province found the water had been polluted with an excessive quantity of ammonia leading to the death of the fish .
article_snippet.sent: he believes the ammonia which polluted a lake in Huizhou City in southern China's Guangdong Province and killed the fish came from a nearby farm which which had been using the chemical as fertiliser .
article_snippet.sent: he claims the source of the ammonia may have been fertilizer being used at a nearby farm.
highlights_snippet.sent: Owner of a fish farm which operates from a lake in Huizhou City in southern China's Guangdong Province says Owner of a fish farm which operates from the lake found evidence the water was polluted with ammonia .
  