Bacteria Survive In Cold And Hot?

[fishmad135]

Last night i was just thinking and i just wanted to know (out of interest) if a tank was cold water would the bacteria in the filter be able to live in heated tanks (say you put a heater in the cold water tank) and the other way round - hot water tank turned cold water?

just out of interest..?

 

[GrayScale]

If I'm not mistaken, the filter bacteria is different in hot vs. Cold. I'm not 100% sure though but pretty close.

 

[rob158]

I asked sort of the same thing

http/www.fishforums.net/index.php?/topic/347021-filter-media/page__p__2892155&#entry2892155

 

[Mikaila31]

I believe they are the same type, but cold will take longer to establish. Bacteria are different in FW vs SW.

 

[GrayScale]

Yea I suppose I should just stick to the planted section since I can never get this stuff right haha.

 

[Bignose]

Part of what clouds this question is that not unlike people, different strains of the same bacteria can prefer different temperatures. Now unlike how two people -- genetically both Home sapiens -- one may prefer a warmer climate, and the other colder. Two strains of bacteria -- genetically both Nitrospira -- one may reproduce faster at a warmer temperature and one may reproduce faster at a cooler temp. So, while it may be the same bacteria, the colony is made up of a warm-loving strain or a cool-loving strain. And, if the temperature is changed suddenly, the colony will have a brief lag period where the other temperature strain starts to dominate and the non-optimal temperature strains are pushed out.

All the above falls under the umbrella of bio-diversity, and it is something that we do want to encourage in our tanks. Regarding this temperature preference, I do change the settings on my heaters throughout the year -- to be warmer in the summer and cooler in the winter. This way, no one bacterial strain becomes dominant, and I encourage the diversity in the tank.

 

[Liamm]

As far as i'm aware bacteria in a coldwater aquarium are the same as in a tropical aquarium, but bacteria in a tropical aquarium are more active due to their metabolism being higher, because of the higher temperature in the tank. For every rise of 10 degrees C the activity of the bacteria doubles.

 

[Bignose]

For every rise of 10 degrees C the activity of the bacteria doubles.

Liamm, I've never seen this statement before, would you be able to cite where you got it from? Because while warmer temperatures do typically mean greater activity by bacteria, the bacteria we grow in home aquaria are truly oddballs of the bacteria world. They are much slower growing than most other types. So, I'd like to see where this doubling per 10 degrees applied to the aquarium bacteria. Thanks.

 

[Liamm]

For every rise of 10 degrees C the activity of the bacteria doubles.

Liamm, I've never seen this statement before, would you be able to cite where you got it from? Because while warmer temperatures do typically mean greater activity by bacteria, the bacteria we grow in home aquaria are truly oddballs of the bacteria world. They are much slower growing than most other types. So, I'd like to see where this doubling per 10 degrees applied to the aquarium bacteria. Thanks.

My source is the OATA "certificate" level qualification work book. It states: "filter bacteria "shut down" completely at very low (7-8oC) temperature. As the temperature rises to around 30-35oC, their metabolism and hence the rate at which they can process ammonia and nitrite increases. As a rule of thumb the activity of bacteria will double for each 10oC rise in temperature. Thus bacteria at 30oC will be operating at approximately x4 the rate they would be at 10oC. " I can post a picture if you'd like, only through PMs though as it does state at the front that the publication can't be reproduced without consent.

 

[ddgbumblebee]

It does make sense that they would have far more energy at higher temperatures (and hence, do more) and much less at colder temperatures (do less) but I suppose it would depend on the specific bacteria.
"it does state at the front that the publication can't be reproduced without consent. "
Funny, don't worry. I'm sure you won't get into too much trouble

 

[Bignose]

For every rise of 10 degrees C the activity of the bacteria doubles.

Liamm, I've never seen this statement before, would you be able to cite where you got it from? Because while warmer temperatures do typically mean greater activity by bacteria, the bacteria we grow in home aquaria are truly oddballs of the bacteria world. They are much slower growing than most other types. So, I'd like to see where this doubling per 10 degrees applied to the aquarium bacteria. Thanks.

My source is the OATA "certificate" level qualification work book. It states: "filter bacteria "shut down" completely at very low (7-8oC) temperature. As the temperature rises to around 30-35oC, their metabolism and hence the rate at which they can process ammonia and nitrite increases. As a rule of thumb the activity of bacteria will double for each 10oC rise in temperature. Thus bacteria at 30oC will be operating at approximately x4 the rate they would be at 10oC. " I can post a picture if you'd like, only through PMs though as it does state at the front that the publication can't be reproduced without consent.

Actually, I am a little more curious if your workbook cites where they get the fact from? I.e. do they cite a specific paper or other scientific text? Not that the workbook is wrong, but I doubt that the authors of the book did the research to show this, so they should cite where they got the information from.

If not, if you could just post the title of the book, the author(s) or editor(s), and the year of publication, that would be enough for me to look it up myself sometime when I get the time. Thanks.

 

[Liamm]

For every rise of 10 degrees C the activity of the bacteria doubles.

Liamm, I've never seen this statement before, would you be able to cite where you got it from? Because while warmer temperatures do typically mean greater activity by bacteria, the bacteria we grow in home aquaria are truly oddballs of the bacteria world. They are much slower growing than most other types. So, I'd like to see where this doubling per 10 degrees applied to the aquarium bacteria. Thanks.

My source is the OATA "certificate" level qualification work book. It states: "filter bacteria "shut down" completely at very low (7-8oC) temperature. As the temperature rises to around 30-35oC, their metabolism and hence the rate at which they can process ammonia and nitrite increases. As a rule of thumb the activity of bacteria will double for each 10oC rise in temperature. Thus bacteria at 30oC will be operating at approximately x4 the rate they would be at 10oC. " I can post a picture if you'd like, only through PMs though as it does state at the front that the publication can't be reproduced without consent.

Actually, I am a little more curious if your workbook cites where they get the fact from? I.e. do they cite a specific paper or other scientific text? Not that the workbook is wrong, but I doubt that the authors of the book did the research to show this, so they should cite where they got the information from.

If not, if you could just post the title of the book, the author(s) or editor(s), and the year of publication, that would be enough for me to look it up myself sometime when I get the time. Thanks.

Oh I see, I've had a flick through it and I can't see a stated source, and it's not a published book, you have to apply for it, sorry I'm not being any help. You could try emailing them though and they may be able to state their source.

http/www.ornamentalfish.org/

 

[waterdrop]

Yes, the 10-degree statements sound more generalized than the Hovanec articles or the various graphs in the waste water treatment plant literature that we sometimes see. WD