Fluctuating water temps - is this bad?
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Fluctuating water temps - is this bad?

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Fluctuating water temps - is this bad?
Old 08-05-2012, 06:16 AM   #1
 
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Fluctuating water temps - is this bad?

Hey everyone,

I bought a thermometer recently for my tank and noticed when it put it in that the water was reading 17 degrees C.

It's a small 38 litre freshwater tank with one very small Oranda living in it.

I've noticed today that the temp is nearly 20 degrees C and earlier in the week it was down to just below 16 degrees C.

I know the tank is not ideally placed and I've got a much bigger tank and tank location for her to move into but what sort of temps should I be aiming for and variations are considered acceptable?

Thanks all
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Old 08-05-2012, 07:32 AM   #2
 
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These variations are small and happy over several hours, so it gives the fish time to adjust.
For the new tank, even though she's a goldfish, I'd pick up a heater and set it to a good temperature just so it doesn't drop so low. Fancy goldfish are more sensitive that common goldfish and actually should be at at least 20C to be comfortable.
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Old 08-05-2012, 07:47 AM   #3
 
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Excellent thank you so much for that!!
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Old 08-05-2012, 01:17 PM   #4
 
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How big is the much bigger tank?

I agree, if that is the tanks unheated temp then you should get a heater to set a minimum temp.

The temp fluctuations are largest in small volumes of water. The temperature will be much more stable in a larger tank.
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Old 08-05-2012, 01:25 PM   #5
 
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Hi jaysee,

The new tank is 153 litres / 40 Gal

Thank you very much
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Old 08-05-2012, 01:28 PM   #6
 
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That will be a nice upgrade for the fish for sure. Down the road you might find the fish needs one last upgrade, though. Depends on how well you take care of it ;)
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Old 08-05-2012, 01:30 PM   #7
 
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Yup. Oranda are one of the bigger fancy types. I think they can hit 10 inches.
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