What is the best temperature the water should be for oscars?

I keep mine between 78-80 range.

I keep mine about 78 to 82 but because were i live in the summer the heaters get turned off and the a/c goes on

I keep mine around 75-78 degrees, lower temps can sometimes help reduce aggression. It also provides better oxygenated water than higher temps.

Hotter water can make them more aggressive, I save higher temps if I need to treat for something like ich or constipation. I know when my O had swim bladder I upped the temp and medicated the tank and it helped tremedously.

Here its hot as well during the summer and I usually dont use heaters, and the water with stay pretty stable around 76-78 degrees (F)

I have to keep my tank around 82-84 degrees F year'round cuz in the summer I just can't get it below that so I figure keeping it consistent is likely better for the fish than having it cooler sometimes and warmer sometimes.

well my logic was that in a natural habitat, the water varies from day to night, so a little variation, slowly may not be all that bad. But I do know higher temps can increase aggression and make oxygen levels not as good as cooler water. In this article it says it increases the fishes metabolism and stimulates aggression. www.cichlid-forum.com/articles/reducing_aggression.php

And here it shows how high temps cause oxygen saturation to fall..
freshaquarium.about.com/cs/qa/f/faq0003.htm
www.aquarticles.com/articles/management/...iumpros_Chiller.html

food for thought for all of your tanks, even a fan may help lower temps!

I keep mine at 79f/29C

Variation in the temperature over the seasons is fine. This is what happens in the wild- its fast variations in temperature that can be bad.

@delboybully yes, thats how I feel about it

delboybully wrote:


In Iowa you can have one day 68 degrees and the next 90. It's potentially a lot more damaging to have a quick shift to warmer water than cooler. When we do have hot days no matter what I do the tank temp won't go below 84 so I set my heaters near that. In Winter I can set it down lower which I change slowly through the Fall.

There's not even 5 degrees variation in the Amazon between night and day.

This is true, but remember that fish can tolerate grester changes in temperature in larger bodies of water. So a 5 degree F temperature change in a river or lake may not affect them, a 5 degree F temperature change in a 75 gallon aquarium may kill them.