Newbie question: Water change for temperature control? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 07-19-2011, 04:25 AM Thread Starter
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Newbie question: Water change for temperature control?

I've just started a 20 gallon planted tank (2nd week) and have managed to maintain a temperature between 72-74 degrees. With a rare heat wave, I came home to a temperature of 80. I don't have any live critters yet (other than six snails that magically appeared) but decided to experiment. I removed a gallon of water and added a gallon of cold water, treated of course. This brought the temperature down to 73.5. From what I can tell, it didn't affect the snails.

If I had fish or shrimp, would this have caused a problem? What is a greater risk, a steadily rising temperature or a reduction in temperature?

If what I did was a bad idea, how can I reduce the water temperature?

Of course, it was a temporary solution as after two hours it's now back up to 76F.

Thanks.
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post #2 of 6 (permalink) Old 07-19-2011, 04:40 AM
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Get a fan.
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post #3 of 6 (permalink) Old 07-19-2011, 04:44 AM
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Sudden drops in temperature like that are worse for fish than a gradual increase in heat.

As said you can use a fan to cool it down. How big is the tank? Mine rarely increases more than 1-2 degrees Celsius during heat waves, but my 10g would easily fluctuate like that


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post #4 of 6 (permalink) Old 07-19-2011, 02:09 PM
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As everyone has stated a sudden drop in temperature is far more dangerous than a slow increase. Depending on what you plan to keep 80 degrees isn't really a bad temperature to keep your tank at. Anyway, the best way to cool your tank down is a clip on fan just aim it so it is blowing across the waters surface, and it will do a fantastic job at reducing the temperature.
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post #5 of 6 (permalink) Old 07-19-2011, 02:35 PM
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Tank Temperature Control

Good morning js...

Agreed. You want to avoid sudden temperature changes. This time of year, I typically open windows throughout the house early in the morning and set up a couple of fans to draw in the cooler air.

When it's time to go to work, I close up everything and turn off the fans. I close any curtains in windows that get a lot of direct sun and the house stays fairly cool during the day.

The temp in my tanks rises a few degrees during the day, but the fish are tropical and used to slight changes up and down and closing up the house really helps.

I do have A/C but don't want to jack up the utility bill, that's saved for the really hot days to come.

B

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post #6 of 6 (permalink) Old 07-20-2011, 04:17 AM Thread Starter
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Thanks all, for the responses. I was thinking about adding some cherry shrimp and read that they prefer temps in the low 70s so it looks like a fan will be my next investment...
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