Petroleum, a fossil fuel, supplies more energy to the world today than any other source. The United States is the world's leading consumer of petroleum; in 1994, Americans used 7,587,000 barrels of oil per day.
Frequently test for ammonia and nitrite (you want both to measure zero). A pH test is also handy to ensure your goldfish's water is not too alkaline or acidic. This can be purchased at any pet store. Do not modify the fish's water, however, unless it is significantly different from neutral.
So whatâs the best water temperature for goldfish, and in what circumstances might you need to adjust the set temperature? The ideal range. Goldfish are often considered to be tropical fish, as theyâre certainly not cold water fish, but is this really a true description? While goldfish can live in temperatures as high as 30 degrees centigrade, experts recommend keeping them in water thatâs between 23 and 24 degrees.