Water temperature

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Was cleaning some debris from around the pump intake, and the water felt quite warm to me. I dropped my HVAC thermometer in the water, it came back 90 degrees.
 
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addy1

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We were at 80, pond dropped back down to 73.
 

addy1

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We are now 68f in the pond, 58 air
 
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Just now, it's 70f. But I expect it to climb to 90 or more by this afternoon.
 
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Thanks for the reminder to get a new one, my cracked over the winter
Anyone able to suggest one which I can use all year round?
 
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89F when i checked mine last weekend. Highest i've seen mine get is 94F and I actually lost a goldfish during that warm spell. I now have a sail shade that goes up June - August and Aerators on hand for prolonged 100+ heat waves.
 

Mmathis

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89F when i checked mine last weekend. Highest i've seen mine get is 94F and I actually lost a goldfish during that warm spell. I now have a sail shade that goes up June - August and Aerators on hand for prolonged 100+ heat waves.
My shade sail goes up in a few weeks!
 

addy1

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Holy smokes you guys.
I don't think I've ever seen my water temperature over 72F.
Well duh...your water has no time to get warm!..............your winter just ended!

We are sitting at 80 again.
 
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What are you talking about, we almost got up to 49F here today.:p
(air temperature, I don't have any water right now)
 
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Wow! How do we deal with this? I don’t see me having that problem but, ice down the pond? Just checked. 65F Pond 72 Air. Have any of you had to chill your pond. I can’t imagine in the 2000+ gallon range.
 

Mmathis

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What are you talking about, we almost got up to 49F here today.:p
(air temperature, I don't have any water right now)
My air temp. is in the mid 80’s at 8:30am and will probably be in the 90’s by noon. No idea what the heat index is, but it has been in the 100-teens for the past few weeks. Haven’t checked the pond in a week or so.
 

mrsclem

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I've had mine get to 90 several times before, both raised ponds in full sun. I increase aeration and do water changes to bring temps down. I just got some azolla to help shade the ponds.
 
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I've floated a half sheet of Rmax in the pond to shade it. Fish like the shady spot. ;)
 

Mmathis

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OK.....as of 4pm...... 94F air temp / 100F heat index :dead: 87F pond water

LOL! My temp thingy says 87F!
 
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Wow! How do we deal with this? I don’t see me having that problem but, ice down the pond? Just checked. 65F Pond 72 Air. Have any of you had to chill your pond. I can’t imagine in the 2000+ gallon range.
Salifert makes an oxygen test kit. Start there to see if there is a low oxygen concern.
https://www.drsfostersmith.com/product/prod_display.cfm?pcatid=16555

Temperaturewise, goldfish and koi are ok to 30C/86F. Past that, it will cause them stress.

Anything a person can do to increase evaporation will cool down a pond - circulation, aeration and using a fan to blow across the surface (in lower humidity conditions).
Shading as mentioned above will help.
 
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DSCN1075 (Copy).jpg

Water temp today at ~2:30PM.
 
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