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Carl
01-04-2009, 12:21 PM
What is the minimum temp koi should be kept at if cost were not an issue?

Russell Peters
01-04-2009, 12:22 PM
50 degrees.

CHICHI
01-04-2009, 12:30 PM
What is the minimum temp koi should be kept at if cost were not an issue?

Hi CP ..


The optimum temperature for carp is stated to be 77F.


There is a Graph depicting Koi Metabolism at various temperatures and related environmental Factors :yes:

http://www.usakoi.com/article1.html

Great Article - and one of my Favourites :yes:

Russell Peters
01-04-2009, 12:41 PM
Hi CP ..



There is a Graph depicting Koi Metabolism at various temperatures and related environmental Factors :yes:

http://www.usakoi.com/article1.html

Great Article - and one of my Favourites :yes:

I think he means the minimum temperature, probably during the winter. It isn't ideal to keep Koi at 77 degrees all year round.

stephen
01-04-2009, 12:42 PM
I think 50 would be the absolute minimum with 55-60 being the ideal minimum.

Russell Peters
01-04-2009, 12:43 PM
I think 50 would be the absolute minimum with 55-60 being the ideal minimum.


Does your water ever get that low?

stephen
01-04-2009, 12:45 PM
Does your water ever get that low?

Yea it sure can. Currently it is 69.3 burrrrrrrrr:eek1:

CHICHI
01-04-2009, 12:47 PM
I think he meens the minimum temperature, probably during the winter. It isn't ideal to keep Koi at 77 degrees all year round.

My minimum for the GO Babes is 18C :yes:

Russell Peters
01-04-2009, 12:57 PM
My minimum for the GO Babes is 18C :yes:

Why 64.4?:confused:

Carl
01-04-2009, 12:58 PM
In keeping with the "four season fish theory," would 50f allow for egg absorption and sufficient reduction in metabolism overall?

Russell Peters
01-04-2009, 12:58 PM
Yea it sure can. Currently it is 69.3 burrrrrrrrr:eek1:


Your Koi do suffer, don't they?:rolleyes:

Russell Peters
01-04-2009, 12:59 PM
In keeping with the "four season fish theory," would 50f allow for egg absorption and sufficient reduction in metabolism overall?

I think so, if you wanted to you could push it a little lower to 48f.

Just Jessie
01-04-2009, 12:59 PM
So is there an econimical way to keep my 20,000 gallon ice cube at 50-55 during the winter?

six6guy
01-04-2009, 12:59 PM
Carp are a cold water fish. They need to have seasonal change. So a low of about 50 for winter seems correct to me. Summer temps should be close to 80.

Brad

Carl
01-04-2009, 01:00 PM
So is there an econimical way to keep my 20,000 gallon ice cube at 50-55 during the winter?

You can use those outdoor furnaces to heat ponds. :yes:

Russell Peters
01-04-2009, 01:00 PM
So is there an econimical way to keep my 20,000 gallon ice cube at 50-55 during the winter?

I don't think so, you could go solar like pools do but the initial set up is a little costly. Remember a set up for solar for a pool is not the same as for a whole house so we are not talking $30k.

CHICHI
01-04-2009, 01:01 PM
Why 64.4?:confused:

This corresponds to the lowest setting on my Thermostat :yes: or I would maintain 20C :yes:

Carl
01-04-2009, 01:03 PM
I have some koi in a dream pond show tank in the cabana which is why I am asking. The cabana is heated so I can control the temp.

six6guy
01-04-2009, 01:03 PM
So is there an econimical way to keep my 20,000 gallon ice cube at 50-55 during the winter?

Solar. Run pond water through long black pipes exposed to sunlight. You can cover one side of a barn roof with a grid of black pipe and get good results. Not sure you can get to 50, but a 10 or 15 degree increase in normal temp is likely.

Brad

stephen
01-04-2009, 01:04 PM
In keeping with the "four season fish theory," would 50f allow for egg absorption and sufficient reduction in metabolism overall?


50-55 will slow them down sufficiently.

Also I think that less variation in annual temperature swings = less stress. I feel that 20-30 degrees F would be the maximum desired amount of variation.

Russell Peters
01-04-2009, 01:04 PM
This corresponds to the lowest setting on my Thermostat :yes: or I would maintain 20C :yes:

That's the lowest temperature on my heater as well.;)

vipldy
01-04-2009, 01:05 PM
Carl,if you wanna grow them 70's would be good!

Carl
01-04-2009, 01:05 PM
Solar. Run pond water through long black pipes exposed to sunlight. You can cover one side of a barn roof with a grid of black pipe and get good results. Not sure you can get to 50, but a 10 or 15 degree increase in normal temp is likely.

Brad

Wouldn't you want to bypass that at night, though? If not, wouldn't it act to cool the water at night?

CHICHI
01-04-2009, 01:07 PM
Wouldn't you want to bypass that at night, though? If not, wouldn't it act to cool the water at night?

In General :yes:

six6guy
01-04-2009, 01:11 PM
Wouldn't you want to bypass that at night, though? If not, wouldn't it act to cool the water at night?

Yes. My brother has this setup, he is in the central Washington hills (Wenatchee area). We just setup a 100vac timer to control the pump, he adjusts the timer to match sunlight hours. It works pretty good.

Brad

stephen
01-04-2009, 01:14 PM
I don't want then to grow until they are outside in the spring. :no:

No reason to let it get below 50 except for the cost.

vipldy
01-04-2009, 01:16 PM
I would say 50-55 then but more like 55:yes:

six6guy
01-04-2009, 01:19 PM
That's the lowest temperature on my heater as well.;)

I have the heater units from a king sized water bed under my intex QT. So I only have low, medium, and high (and every possible position in between). So low is as low as I go. :rolleyes:

Brad

madeyna
01-05-2009, 01:41 PM
Just though I would mention that my koi thawed out and are swimming around in the ice. I am thinking about putting them in the big pond since temp. swings would be less in the 5000 gallon in the ground. They just froze over in the stock tank and that cann,t be good. I am not sure the stock heater would maintain 50 and above though.

Cowiche Ponder
01-05-2009, 02:02 PM
Yes. My brother has this setup, he is in the central Washington hills (Wenatchee area). We just setup a 100vac timer to control the pump, he adjusts the timer to match sunlight hours. It works pretty good.

Brad

Brad he has to be using it as a heat exchanger with something other than water in the pipes or the water would freeze at night, or the whole thing would have to be set to drain completely

Graham
01-05-2009, 02:21 PM
The big problem that I can see with solar heating pipes is the big swing that could occur from day to night, let alone the swing based on ambient air temps. If there was some way to use an auto thermostat to control a pump gph then it might work.

I know that the ambient air temps in the koi house can go from 50* to 90* in 24 hours; taking tank temps up or down by about 7*> 8* in the process. I can't imagine what solar pipes might do depending on the day and where you live.

I like when it goes up in temp, then the heaters don't kick in. They're set at a minimium of 58*

G