07-04-2007, 01:56 AM
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Originally Posted by Julie's Julies
- goldfish need extra aeration due to size and cold water -
Goldfish need extra oxygen because they consume more oxygen than the average fish. Size and cold water are not the reason. There are many fish that grow larger than goldfish, yet don't have the oxygen consumption that goldfish do. It is a matter of physiology, and I'd have to do some research to find the exact reasons for you, as I don't remember what it is off the top of my head... but whatever the reason you were under the impression that colder water had lower oxygen content, that is not the case. The warmer the water temp, the lower the oxygen level. That doesn't work both directions with a cut off in the middle somewhere... as was already explained, it's a matter of molecules and can be explained with a chemistry lesson that I don't have the time to give right now. Maybe someone else here knows the details enough to take the time to explain that one for you.
With your current situation, if you raise the temp, you may find that additional aeration may be needed until the temp is lowered once again.