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#504743 - 04/22/19 07:54 PM Should I turn off daytime aeration?
bigbambo Offline


Registered: 05/21/12
Posts: 17
Loc: ohio
Hello, my 3/4 acre pond in Northern Ohio has WE, YP, RES, GSH, Bluntnose & Spotfin minnows. Built in the fall of 09, I have never turned off my windmill aerator. I've read a few post that promote evening aeration during the summer and would like to know the parameters of this act if someone cares to reply. Thanks

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#504744 - 04/22/19 07:59 PM Re: Should I turn off daytime aeration? [Re: bigbambo]
DrLuke Offline


Registered: 06/04/15
Posts: 412
Loc: Grinnell, IA
Do you have a way of measuring the water temp in your pond? Daytime aeration in warm weather can raise the average temp of your pond, and cooler water preferring species like WE and YP can get stressed (or potentially die) in too warm of water.
_________________________
The man who asks a question is a fool for a minute. The man who does not ask, is a fool for life.
- Confucius
--------------

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#504747 - 04/22/19 09:19 PM Re: Should I turn off daytime aeration? [Re: bigbambo]
Mike Whatley Offline


Registered: 04/22/18
Posts: 947
Loc: Louisiana
How deep is your pond, and how deep is your deep diffuser? You can run aeration during the heat of summer if you are able to maintain a thermocline, where cooler, less oxygenated water exists. They cant live there, but they can escape the heat temporarily.

Get yourself a pool thermometer and a removable weight. Take readings from about 16" deep, again at half the depth of the pond and then at the deepest area. If you're finding a significant variance in temps from top to bottom, then you may be ok, if that coolest water is conducive to WE.

If your summer diffuser is set on the bottom at depth, you may need to elevate it on a platform, relocate it shallower, or you may have to switch to running an early morning schedule (4am-10am). That too depends on how long it takes to turn your pond over with one diffuser.
_________________________
.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!

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#504760 - 04/23/19 09:11 AM Re: Should I turn off daytime aeration? [Re: bigbambo]
bigbambo Offline


Registered: 05/21/12
Posts: 17
Loc: ohio
When dug, it was 15' to 16' deep and I need to stick it again. The diffuser is set in 9' of water at one end. I will follow your instructions Mike W and thanks. I have a pool and in 2012 & 13 I tied the used ones off my dock and in less than a month all marking were wiped clean.

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#504762 - 04/23/19 10:14 AM Re: Should I turn off daytime aeration? [Re: bigbambo]
Mike Whatley Offline


Registered: 04/22/18
Posts: 947
Loc: Louisiana
With your diffuser set in 9 feet, there's a good possibility that you may have a thermocline in the deepest part of the pond, but you wont know until you get some graduated temp readings top to bottom. A pool thermometer, railroad spike and some nylon cord work well. You can adjust the depth by setting the weight on the bottom and adjust the depth of the thermometer to the depth you want to test. I would check every foot until you find the depth where the greatest temp change occurs. That's how deep your transition is. But that change may be minimal and may not leave your fish much area to escaped. Regardless, you may still need to change run times to early morning to keep from overheating the pond.

Again, they wont be able to live down there, but they can escape the warmer water temps for a short period.
_________________________
.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!

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#504826 - 04/24/19 10:02 AM Re: Should I turn off daytime aeration? [Re: bigbambo]
bigbambo Offline


Registered: 05/21/12
Posts: 17
Loc: ohio
...should my diffuser be in the deepest area during the summer and then start temp readings?

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#504829 - 04/24/19 10:15 AM Re: Should I turn off daytime aeration? [Re: bigbambo]
Mike Whatley Offline


Registered: 04/22/18
Posts: 947
Loc: Louisiana
I'd leave it where it is and take some readings first. See if you have a thermocline in your deepest area they can retreat to. If you dont have a thermocline, then you can adjust run schedule and duration accordingly.
_________________________
.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!

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