Winter Pond Temps

[Craig58]

Location: West Chester, Pa
Pond Description:
Style: Formal
Approx. gallons/liter: 3600 G
Max depth: 4 ft
General Notes: Only running air pump. Airstone located 12" below surface on shelf
15 Koi, 8" - 24"

Date: 26-Nov-2012
Time: 2100 hrs
Outside air temp: 25.3 F
Surface pond temp: 39.4F
Bottom pond temp: 43.7F

Craig

 

[mtpond]

Location: Kalispell MT
Approx. gallons: 3788
General Notes: Running air pump. 7 inch diffuser down aboub 9 inches on shelf. 13 koi 4 - 18" 1 fantail goldfish 8"

Date: 11/27/2012
Time: 1:58 AM
Outside temp: 13 F
Surface pond temp: 33 F
Bottom pond temp: 34.7 F

 

[Mucky_Waters]

Location: Olalla, BC
Pond Description:
Style: Natural
Approx. gallons/ 2000
Max depth: 5 ft
General Notes: no pump, no air
a bunch of goldfish and minnows, some frogs and some turtles

Date: 27-Nov-2012 (pond now has 1/4" layer of ice on surface)
Time: 10:00 pm
Outside air temp: 0 C - 32 F
6" below surface pond temp: 3 C - 37.4 F
Bottom pond temp: 4.1 C - 39.38 F

Mucky

 

[fishin4cars]

Pond 1 Location: Hammond LA
Pond Description: Bog Garden and Lily pond
Style: Natural
Approx. gallons/liter: 9000 gallons
Max depth:34"
General Notes: 15' x 6' bog, PS 9000 filterfalls 8000 gph run through ps 4800 skimmer no bottom drain pumps run 24/7 year round

Date:11-27-2012
Time:12:34 am
Outside air temp: 41.6f
Surface pond temp: 51.4f
Bottom pond temp: 57 f
Pond 2 Location: Hammond LA
Pond Description: Koi Only pond
Style: Formal semi raised
Approx. gallons/liter: 10,500 gallons
Max depth: 5'
General Notes: Presently running Atlantic ps4500 skimmer with 10, gph pump through Atlantic PS 9000 filterfall 4" Bottom drain Not running at this time. Pumps run 24/7 year round

Date: 11-27-2012
Time: 12:34 am
Outside air temp: 41.6 f
Surface pond temp: 51.6 f
Bottom pond temp: 57 f

 

[Craig58]

Location: West Chester, Pa
Pond Description:
Style: Formal
Approx. gallons/liter: 3600 G
Max depth: 4 ft
General Notes: Only running air pump. Airstone located 12" below surface on shelf
15 Koi, 8" - 24"

Date: 01-Dec-2012
Time: 0230 hrs
Outside air temp: 32.5 F
Surface pond temp: 38.1 F
Bottom pond temp: 42.2 F

Craig

 

[Mucky_Waters]

Location: Olalla, BC
Pond Description:
Style: Natural
Approx. gallons/ 2000
Max depth: 5 ft
General Notes: no pump, no air
a bunch of goldfish and minnows, some frogs and some turtles

Date: 1-Dec-2012 (pond is free of ice again) :claphands:
Time: 12:15 am
Outside air temp: 7.7 C 45.46 F
6" below surface pond temp: 4.4 C - 39.92 F
Bottom pond temp: 4.3 C - 39.72 F

Mucky

 

[addy1]

Location: Frederick, Md
Pond Description:
Style: natural
Approx. gallons/liter: ~ 10000 G ~` 37854 l
Max depth: 5 ft
General Notes: Only running air pump. Diffuser ~ 15 inches down
200 plus goldfish

Date: 1-Dec-2012
Time: 5:30 am
Outside air temp: 32 F --- 0 c
Surface pond temp: 38.8F --- 3.7c
Bottom pond temp: 40.1F --- 4.5c

 

[Dave 54]

Location: Plymouth
Pond Description: Free Standing
Style: Formal
Approx. gallons/liter: 1,000 imperial
Max depth:4ft
General Notes Pond not heated but entire pond and filter housing insulated against the cold with oil heated radiator in the filter housing.
Nothing is turned off but air to pond reduced through spindifter bottom drain, however air to all filters still on full UV-c is on.
Oase dry pump 3500 still running at maximum capacity. Added Remote readout thermometer 1/12/112 for daily readout
:

Date:2/12/12
Time:10:16
Outside air temp:3c
Surface pond temp:11.1c*
Bottom pond temp: 11.1c*
* Note read from remote readout.

rgrds


Dave

 

[MitchM]

Location: Water Valley, Alberta
Pond Description:
Approx. gallons/liter: 6000g
Max depth:5 feet
General Notes: 4 aeration holes, , 2 frozen over. Ice 3" thick, lots of animal footprints. Surface heater gets plugged in after a few weeks of all 4 aeration holes frozen over. Fish population 3 - 8" koi, 4 - 6" shubunkins.
Interesting to note that since the aeration holes have frozen over, the bottom temperature has risen by 2 degrees F. When all 4 holes were open, temp was 53.5F.



Date: Dec 6, 2012
Time: 2:31 pm
Outside air temp: -2C/+28F
Surface pond temp: 32.1F (a few inches below the ice)
Bottom pond temp: 55.5F

 

[fishin4cars]

Is that bottom temp accurate and correct? That sounds very high for surface temps to be that low with any water movement at all. I even went back and look at others and they seem more on tract with there area/air temp. With a bottom temp of 55 I can't even figure out how the surface freezes.

 

[addy1]

Location: Frederick, Md
Pond Description:
Style: natural
Approx. gallons/liter: ~ 10000 G ~` 37854 l
Max depth: 5 ft
General Notes: Only running air pump. Diffuser ~ 15 inches down
200 plus goldfish

Date:...................... 4-Dec-12........6-dec-12...............7-dec-2012
Time: ..................... 5:00 pm.........844pm..................530am
Outside air temp:..... 70 F --- .......33f ......................36f
Surface pond temp:.. 52F ---.......... 44.6....................42.6
Bottom pond temp: ...51F --......-...43.2....................43.3

 

[MitchM]

This is the second location that I've tried a bottom temp reading, both with similar results.
I'll have to pick up a second probe so I can get confirmation. The high temp reading does seem strange.

 

[Mucky_Waters]

I bought a second thermometer this fall to measure temps near the surface (already have one for bottom temps), however the probe gave me a false high temperature reading, so I returned the thermometer and bought a different one that seems to be working properly. The probe on the first one was reading 140 C 6" under the ice, I was pretty sure that was not the correct temp.

Have you tried just putting the underwater probe beside the main temp probe to compare readings?

 

[Craig58]

Location: West Chester, Pa
Pond Description:
Style: Formal
Approx. gallons/liter: 3600 G
Max depth: 4 ft
General Notes: Only running air pump. Airstone located 12" below surface on shelf
15 Koi, 8" - 24"

Date: 08-Dec-2012
Time: 0030 hrs
Outside air temp: 42.2 F
Surface pond temp: 42.3 F
Bottom pond temp: 45.5 F

Craig

 

[MitchM]

Have you tried just putting the underwater probe beside the main temp probe to compare readings?

I'll have to wait to try that. The whole pond is frozen over again, so the wires are not moveable.
Today the bottom reading is 59F, I'm thinking I might have a probe that is slowly going bad or shorting out or whatever they do. I think the probes measure temperature based on electrical resistance within the probe itself.

Looking at my Weather underground banner, it's reading NA Fahrenheit and 999 Celsius...lol.