High Temps In The Summer?

[vti-chris]

Guys i will be having problem with my 35G tank in the summer.
It's the first summer i'm going through with a freshwater tank and don't know what to do.
Here in Cyprus temps go up to 40C-44C.
From what the LFS told me the temps in the tank can get up to 33C-35C.
I don't think that my fish can live that high temps.
I have tetras,corys,guppies,SAE, CAE.
What can i do to keep them alive?

 

[mantis147]

Looks like you need a chiller but they arent cheap!

 

[vti-chris]

Looks like you need a chiller but they arent cheap!

Yes i know but for a 35G tank i don't want to spend much on it!
What's the max temp these fish can stand?

 

[doc matt]

I assume the hotter water gets the less oxygen for the fish, so aerate it to hell! 8)


We had a tank in our house in spain. It was in the kitchen so we put an airpump in the freezer with a tube going into the tank and it worked a little. Some freezers are airtight though, lol

 

[WILDER]

http/www.fishforums.net/index.php?showtopic=143623

 

[BBrain]

From what the LFS told me the temps in the tank can get up to 33C-35C.

If the water is fully saturated with oxygen, at 30C it will contain about 5.4 ppm oxygen, according to Rawson's nomagram of oxygen saturation at different temperatures. The maximum temperature it goes to is 30C. I estimated the oxygen content at 35C to be about 4.8 ppm. These are at sea level. At higher elevations, water will hold less oxygen.

To give you an idea what these oxygen levels mean:
According to my textbook (Water Quality in Warmwater Fish Ponds, by C.Boyd), the survival rate of most species of fishes drops in water with less than 5 ppm oxygen, with death at prolonged exposure to less than 1 ppm. Sorry, that's as close a reference to tropical aquarium fishes that I can find in my library.

The big thing to remember is that as water temperature rises, two things happen that are on a collision course. One: fishes metabolism rises, and they demand MORE oxygen. Two: there is less oxygen available to fishes. Therefore, there is a certain critical temperature where fish will die suddenly. (One graph line is going up, while the other is going down.....where the lines meet is where death occurs.)

If you can't stop the temperature from climbing, reduce feeding the fish, to try to slow down their metabolism. That's all you can do. Nature will do what nature does.

You have to ask yourself: Are your fish worth the cost of an aquarium chiller?

Good luck!

 

[hapihour]

That's my problem too. My water temp is at more than 30 degrees C. I've only had my tank a week and am still going thru the cycle with fish and live rock.

My fish have been dying but don't know if it's because of the high water temp or the high levels of nitrates (160ppm). Should I do a partial water change? But I hear that water changes during a cycle will make it longer.