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#479851 - 09/12/17 02:06 PM Fall aeration as the nights cool down
Custom 68 Offline


Registered: 05/09/14
Posts: 109
Loc: Springfield MO area
Hi all, I started my aeration early this spring and things seem to be on track. I was running at night as that seems to be the consensuses during the hot summer days. Now around here in Missouri our nights have been dipping down to the upper 40s on occasion but the days are remaining 80 or so. Last night I decided to start the aerator at about 5:30 am and run it 8 or so hours during the morning as maybe it wont cool the water too much. I have not checked my water temp.
Is this a good thing to change this time of year? I don't expect the water will "turn over" since I have had air on it all summer. Once it gets cold I will only run the shallow when I need to keep it from icing.
Thanks
Dave
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Dave
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#479853 - 09/12/17 02:33 PM Re: Fall aeration as the nights cool down [Re: Custom 68]
DrLuke Online   content


Registered: 06/04/15
Posts: 239
Loc: Grinnell, IA
Here is a Bill Cody quote: "A common time to stop aeration is when the water gets 50F or high 40's or near these temps. Then the pond usually fully circulates especially if it receives some wind action. Fall circulation stops when ice cover forms and water is typically 39F from about 14"-20" to the bottom."

from this thread: http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=307498


You can still run your air in the winter, but you'll need a diffuser in shallow water (1-3 feet typically) to avoid super cooling your pond.
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#479858 - 09/12/17 03:35 PM Re: Fall aeration as the nights cool down [Re: Custom 68]
Custom 68 Offline


Registered: 05/09/14
Posts: 109
Loc: Springfield MO area
Thanks DrLuke for that thread. I will continue running mine but I think I will go ahead and run it more during the day since it is cooler at night. I don't know that it will gain me much during the day vs night but I do like watching it run and move the water.
Thanks
Dave
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Dave
1 acre pond.

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#479860 - 09/12/17 05:12 PM Re: Fall aeration as the nights cool down [Re: Custom 68]
Dinsmoreoutdoors Offline


Registered: 01/22/15
Posts: 204
Loc: Hilliard, FL
Then what about ponds in the south FL,GA,AL,MS,TX ect. where we do not get ice coverage on the water and the coldest the water may get is low 50's high 40's?

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#480078 - 09/18/17 11:26 AM Re: Fall aeration as the nights cool down [Re: Dinsmoreoutdoors]
esshup Offline
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Lunker

Registered: 01/26/09
Posts: 24014
Loc: Grovertown, Indiana
I don't think that they will "need" to be aerated during the winter but......

That is a good question for Highflyer to answer with data. He has a deep pond, and he has an O2 meter, AND he does not have an aeration system. It would be interesting to see if he's taken readings down deep during the winter to see what his O2 readings are when compared to the top 8' of water.

For instance, I checked a pond last week. It has an aeration system, but it was dug deeper post aeration system installation and the air stations were not re-positioned. The diffusers/air stations were at the 6' and 8' depth. The pond was dug to 18'. The concern was where the threshold of 5mg/l O2 was in the pond. There was still 5.0mg/l O2 at 12' down, but the O2 levels quickly dropped to 2.2 mg/l at 18'. Water temp at surface was 70F and 68G at 18' depth.

On a side note, the aeration system was left in the pond with all the water as the pond was dug deeper. Clay pond that needs no compaction. Enough clay material washed out of the bucket as it was being dug to cover the air line and diffuser air station closest to where the digging was being done with over about a foot plus of clay. That airstation was within 40' of the digging. The airstation that was 80-90 feet away still had clay over it, about 6"-8".

Another reason to drain the pond prior to making it deeper.
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